Fix bad method links in docstrings (#13471)

# Description

Seems like I developed a bit of a bad habit of trying to link

```rust
/// [`.foo()`]
```

in docstrings, and this just doesn't work automatically; you have to do 

```rust
/// [`.foo()`](Self::foo)
```

if you want it to actually link. I think I found and replaced all of
these.

# User-Facing Changes

Just docs.

crates/nu-engine/src/compile/builder.rs

@@ -423,7 +423,7 @@ impl BlockBuilder {
         self.push(Instruction::Jump { index: label_id.0 }.into_spanned(span))
     }
 
-    /// The index that the next instruction [`.push()`]ed will have.
+    /// The index that the next instruction [`.push()`](Self::push)ed will have.
     pub(crate) fn here(&self) -> usize {
         self.instructions.len()
     }

crates/nu-plugin-core/src/communication_mode/mod.rs

@@ -122,11 +122,11 @@ impl CommunicationMode {
 
 /// The result of [`CommunicationMode::serve()`], which acts as an intermediate stage for
 /// communication modes that require some kind of socket binding to occur before the client process
-/// can be started. Call [`.connect()`] once the client process has been started.
+/// can be started. Call [`.connect()`](Self::connect) once the client process has been started.
 ///
 /// The socket may be cleaned up on `Drop` if applicable.
 pub enum PreparedServerCommunication {
-    /// Will take stdin and stdout from the process on [`.connect()`].
+    /// Will take stdin and stdout from the process on [`.connect()`](Self::connect).
     Stdio,
     /// Contains the listener to accept connections on. On Unix, the socket is unlinked on `Drop`.
     #[cfg(feature = "local-socket")]

crates/nu-plugin-core/src/interface/mod.rs

@@ -145,7 +145,7 @@ pub trait InterfaceManager {
 
     /// Consume an input message.
     ///
-    /// When implementing, call [`.consume_stream_message()`] for any encapsulated
+    /// When implementing, call [`.consume_stream_message()`](Self::consume_stream_message) for any encapsulated
     /// [`StreamMessage`]s received.
     fn consume(&mut self, input: Self::Input) -> Result<(), ShellError>;
 

crates/nu-plugin-core/src/interface/stream/mod.rs

@@ -189,14 +189,14 @@ where
     }
 
     /// Check if the stream was dropped from the other end. Recommended to do this before calling
-    /// [`.write()`], especially in a loop.
+    /// [`.write()`](Self::write), especially in a loop.
     pub fn is_dropped(&self) -> Result<bool, ShellError> {
         self.signal.is_dropped()
     }
 
     /// Write a single piece of data to the stream.
     ///
-    /// Error if something failed with the write, or if [`.end()`] was already called
+    /// Error if something failed with the write, or if [`.end()`](Self::end) was already called
     /// previously.
     pub fn write(&mut self, data: impl Into<StreamData>) -> Result<(), ShellError> {
         if !self.ended {
@@ -228,7 +228,7 @@ where
     }
 
     /// Write a full iterator to the stream. Note that this doesn't end the stream, so you should
-    /// still call [`.end()`].
+    /// still call [`.end()`](Self::end).
     ///
     /// If the stream is dropped from the other end, the iterator will not be fully consumed, and
     /// writing will terminate.
@@ -341,8 +341,8 @@ impl StreamWriterSignal {
     }
 
     /// Track that a message has been sent. Returns `Ok(true)` if more messages can be sent,
-    /// or `Ok(false)` if the high pressure mark has been reached and [`.wait_for_drain()`] should
-    /// be called to block.
+    /// or `Ok(false)` if the high pressure mark has been reached and
+    /// [`.wait_for_drain()`](Self::wait_for_drain) should be called to block.
     pub fn notify_sent(&self) -> Result<bool, ShellError> {
         let mut state = self.lock()?;
         state.unacknowledged =

crates/nu-plugin-core/src/util/waitable.rs

@@ -45,7 +45,7 @@ fn fail_if_poisoned<'a, T>(
 }
 
 impl<T: Clone + Send> WaitableMut<T> {
-    /// Create a new empty `WaitableMut`. Call [`.reader()`] to get [`Waitable`].
+    /// Create a new empty `WaitableMut`. Call [`.reader()`](Self::reader) to get [`Waitable`].
     pub fn new() -> WaitableMut<T> {
         WaitableMut {
             shared: Arc::new(WaitableShared {

crates/nu-plugin-engine/src/gc.rs

@@ -80,8 +80,8 @@ impl PluginGc {
     ///
     /// The reason the plugin tells the GC rather than just stopping itself via `source` is that
     /// it can't guarantee that the plugin currently pointed to by `source` is itself, but if the
-    /// GC is still running, it hasn't received [`.stop_tracking()`] yet, which means it should be
-    /// the right plugin.
+    /// GC is still running, it hasn't received [`.stop_tracking()`](Self::stop_tracking) yet, which
+    /// means it should be the right plugin.
     pub fn exited(&self) {
         let _ = self.sender.send(PluginGcMsg::Exited);
     }

crates/nu-plugin-engine/src/source.rs

@@ -26,7 +26,7 @@ impl PluginSource {
 
     /// Create a new fake source with a fake identity, for testing
     ///
-    /// Warning: [`.persistent()`] will always return an error.
+    /// Warning: [`.persistent()`](Self::persistent) will always return an error.
     pub fn new_fake(name: &str) -> PluginSource {
         PluginSource {
             identity: PluginIdentity::new_fake(name).into(),

crates/nu-plugin-protocol/src/evaluated_call.rs

@@ -85,19 +85,19 @@ impl EvaluatedCall {
         self
     }
 
-    /// Builder variant of [`.add_positional()`].
+    /// Builder variant of [`.add_positional()`](Self::add_positional).
     pub fn with_positional(mut self, value: Value) -> Self {
         self.add_positional(value);
         self
     }
 
-    /// Builder variant of [`.add_named()`].
+    /// Builder variant of [`.add_named()`](Self::add_named).
     pub fn with_named(mut self, name: Spanned<impl Into<String>>, value: Value) -> Self {
         self.add_named(name, value);
         self
     }
 
-    /// Builder variant of [`.add_flag()`].
+    /// Builder variant of [`.add_flag()`](Self::add_flag).
     pub fn with_flag(mut self, name: Spanned<impl Into<String>>) -> Self {
         self.add_flag(name);
         self

crates/nu-plugin/src/plugin/command.rs

@@ -75,8 +75,8 @@ use crate::{EngineInterface, EvaluatedCall, Plugin};
 pub trait PluginCommand: Sync {
     /// The type of plugin this command runs on.
     ///
-    /// Since [`.run()`] takes a reference to the plugin, it is necessary to define the type of
-    /// plugin that the command expects here.
+    /// Since [`.run()`](Self::run) takes a reference to the plugin, it is necessary to define the
+    /// type of plugin that the command expects here.
     type Plugin: Plugin;
 
     /// The name of the command from within Nu.
@@ -96,9 +96,9 @@ pub trait PluginCommand: Sync {
 
     /// Additional documentation for usage of the command.
     ///
-    /// This is optional - any arguments documented by [`.signature()`] will be shown in the help
-    /// page automatically. However, this can be useful for explaining things that would be too
-    /// brief to include in [`.usage()`] and may span multiple lines.
+    /// This is optional - any arguments documented by [`.signature()`](Self::signature) will be
+    /// shown in the help page automatically. However, this can be useful for explaining things that
+    /// would be too brief to include in [`.usage()`](Self::usage) and may span multiple lines.
     fn extra_usage(&self) -> &str {
         ""
     }

crates/nu-plugin/src/plugin/interface/mod.rs

@@ -618,8 +618,9 @@ impl EngineInterface {
 
     /// Get all environment variables from the engine.
     ///
-    /// Since this is quite a large map that has to be sent, prefer to use [`.get_env_var()`] if
-    /// the variables needed are known ahead of time and there are only a small number needed.
+    /// Since this is quite a large map that has to be sent, prefer to use
+    /// [`.get_env_var()`] (Self::get_env_var) if the variables needed are known ahead of time
+    /// and there are only a small number needed.
     ///
     /// # Example
     /// ```rust,no_run
@@ -873,9 +874,9 @@ impl EngineInterface {
     }
 
     /// Ask the engine for the identifier for a declaration. If found, the result can then be passed
-    /// to [`.call_decl()`] to call other internal commands.
+    /// to [`.call_decl()`](Self::call_decl) to call other internal commands.
     ///
-    /// See [`.call_decl()`] for an example.
+    /// See [`.call_decl()`](Self::call_decl) for an example.
     pub fn find_decl(&self, name: impl Into<String>) -> Result<Option<DeclId>, ShellError> {
         let call = EngineCall::FindDecl(name.into());
 
@@ -890,7 +891,7 @@ impl EngineInterface {
     }
 
     /// Ask the engine to call an internal command, using the declaration ID previously looked up
-    /// with [`.find_decl()`].
+    /// with [`.find_decl()`](Self::find_decl).
     ///
     /// # Example
     ///
@@ -1008,7 +1009,7 @@ impl Interface for EngineInterface {
 
 /// Keeps the plugin in the foreground as long as it is alive.
 ///
-/// Use [`.leave()`] to leave the foreground without ignoring the error.
+/// Use [`.leave()`](Self::leave) to leave the foreground without ignoring the error.
 pub struct ForegroundGuard(Option<EngineInterface>);
 
 impl ForegroundGuard {

crates/nu-protocol/src/engine/engine_state.rs

@@ -832,9 +832,9 @@ impl EngineState {
 
     /// Optionally get a block by id, if it exists
     ///
-    /// Prefer to use [`.get_block()`] in most cases - `BlockId`s that don't exist are normally a
-    /// compiler error. This only exists to stop plugins from crashing the engine if they send us
-    /// something invalid.
+    /// Prefer to use [`.get_block()`](Self::get_block) in most cases - `BlockId`s that don't exist
+    /// are normally a compiler error. This only exists to stop plugins from crashing the engine if
+    /// they send us something invalid.
     pub fn try_get_block(&self, block_id: BlockId) -> Option<&Arc<Block>> {
         self.blocks.get(block_id)
     }

crates/nu-protocol/src/engine/stack.rs

@@ -51,7 +51,7 @@ pub struct Stack {
     pub parent_stack: Option<Arc<Stack>>,
     /// Variables that have been deleted (this is used to hide values from parent stack lookups)
     pub parent_deletions: Vec<VarId>,
-    /// Locally updated config. Use [`.get_config()`] to access correctly.
+    /// Locally updated config. Use [`.get_config()`](Self::get_config) to access correctly.
     pub config: Option<Arc<Config>>,
     pub(crate) out_dest: StackOutDest,
 }

crates/nu-protocol/src/errors/labeled_error.rs

@@ -37,7 +37,8 @@ pub struct LabeledError {
 impl LabeledError {
     /// Create a new plain [`LabeledError`] with the given message.
     ///
-    /// This is usually used builder-style with methods like [`.with_label()`] to build an error.
+    /// This is usually used builder-style with methods like [`.with_label()`](Self::with_label) to
+    /// build an error.
     ///
     /// # Example
     ///

crates/nu-protocol/src/pipeline/pipeline_data.rs

@@ -117,7 +117,8 @@ impl PipelineData {
     /// Get a type that is representative of the `PipelineData`.
     ///
     /// The type returned here makes no effort to collect a stream, so it may be a different type
-    /// than would be returned by [`Value::get_type()`] on the result of [`.into_value()`].
+    /// than would be returned by [`Value::get_type()`] on the result of
+    /// [`.into_value()`](Self::into_value).
     ///
     /// Specifically, a `ListStream` results in [`list stream`](Type::ListStream) rather than
     /// the fully complete [`list`](Type::List) type (which would require knowing the contents),

crates/nu-system/src/foreground.rs

@@ -105,10 +105,10 @@ impl Drop for ForegroundChild {
 ///
 /// If there is already a foreground external process running, spawned with [`ForegroundChild`],
 /// this expects the process ID to remain in the process group created by the [`ForegroundChild`]
-/// for the lifetime of the guard, and keeps the terminal controlling process group set to that. If
-/// there is no foreground external process running, this sets the foreground process group to the
-/// plugin's process ID. The process group that is expected can be retrieved with [`.pgrp()`] if
-/// different from the plugin process ID.
+/// for the lifetime of the guard, and keeps the terminal controlling process group set to that.
+/// If there is no foreground external process running, this sets the foreground process group to
+/// the plugin's process ID. The process group that is expected can be retrieved with
+/// [`.pgrp()`](Self::pgrp) if different from the plugin process ID.
 ///
 /// ## Other systems
 ///