Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/str-reverse.md

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+# str reverse
+outputs the reversals of the strings in the pipeline
+
+## Usage
+```shell
+> str reverse ...args {flags} 
+ ```
+
+## Parameters
+* ...args: optionally reverse text by column paths
+
+## Flags
+* -h, --help: Display this help message
+
+## Examples
+  Return the reversals of multiple strings
+```shell
+> echo 'Nushell' | str reverse
+ ```
+