Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/parse.md

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+# parse
+Parse columns from string data using a simple pattern.
+
+## Usage
+```shell
+> parse <pattern> {flags} 
+ ```
+
+## Parameters
+* `<pattern>` the pattern to match. Eg) "{foo}: {bar}"
+
+## Flags
+* -h, --help: Display this help message
+* -r, --regex: use full regex syntax for patterns
+
+## Examples
+  Parse a string into two named columns
+```shell
+> echo "hi there" | parse "{foo} {bar}"
+ ```
+
+  Parse a string using regex pattern
+```shell
+> echo "hi there" | parse -r "(?P<foo>\w+) (?P<bar>\w+)"
+ ```
+