Add example for cd,transpose,detect columns,split column and split row (#4549)

crates/nu-command/src/filesystem/cd.rs

@@ -1,7 +1,7 @@
 use nu_engine::{current_dir, CallExt};
 use nu_protocol::ast::{Call, Expr, Expression};
 use nu_protocol::engine::{Command, EngineState, Stack};
-use nu_protocol::{Category, PipelineData, ShellError, Signature, SyntaxShape, Value};
+use nu_protocol::{Category, Example, PipelineData, ShellError, Signature, SyntaxShape, Value};
 
 #[derive(Clone)]
 pub struct Cd;
@@ -138,4 +138,12 @@ impl Command for Cd {
         stack.add_env_var("PWD".into(), path_value);
         Ok(PipelineData::new(call.head))
     }
+
+    fn examples(&self) -> Vec<Example> {
+        vec![Example {
+            description: "Change to your home directory",
+            example: r#"cd ~"#,
+            result: None,
+        }]
+    }
 }