Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/math-median.md

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+# math median
+Gets the median of a list of numbers
+
+## Usage
+```shell
+> math median {flags} 
+ ```
+
+## Flags
+* -h, --help: Display this help message
+
+## Examples
+  Get the median of a list of numbers
+```shell
+> echo [3 8 9 12 12 15] | math median
+ ```
+