Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/benchmark.md

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+# benchmark
+Runs a block and returns the time it took to execute it.
+
+## Usage
+```shell
+> benchmark <block> {flags} 
+ ```
+
+## Parameters
+* `<block>` the block to run and benchmark
+
+## Flags
+* -h, --help: Display this help message
+* -p, --passthrough <block>: Display the benchmark results and pass through the block's output
+
+## Examples
+  Benchmarks a command within a block
+```shell
+> benchmark { sleep 500ms }
+ ```
+
+  Benchmarks a command within a block and passes its output through
+```shell
+> echo 45 | benchmark { sleep 500ms } --passthrough {}
+ ```
+