Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

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docs/commands/path-parse.md

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+# path parse
+Convert a path into structured data.
+
+Each path is split into a table with 'parent', 'stem' and 'extension' fields.
+On Windows, an extra 'prefix' column is added.
+
+## Usage
+```shell
+> path parse ...args {flags} 
+ ```
+
+## Parameters
+* ...args: Optionally operate by column path
+
+## Flags
+* -h, --help: Display this help message
+* -e, --extension <string>: Manually supply the extension (without the dot)
+
+## Examples
+  Parse a path
+```shell
+> echo '/home/viking/spam.txt' | path parse
+ ```
+
+  Replace a complex extension
+```shell
+> echo '/home/viking/spam.tar.gz' | path parse -e tar.gz | update extension { 'txt' }
+ ```
+
+  Ignore the extension
+```shell
+> echo '/etc/conf.d' | path parse -e ''
+ ```
+
+  Parse all paths under the 'name' column
+```shell
+> ls | path parse name
+ ```
+