Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/random-chars.md

@@ -0,0 +1,23 @@
+# random chars
+Generate random chars
+
+## Usage
+```shell
+> random chars {flags} 
+ ```
+
+## Flags
+* -h, --help: Display this help message
+* -l, --length <integer>: Number of chars
+
+## Examples
+  Generate random chars
+```shell
+> random chars
+ ```
+
+  Generate random chars with specified length
+```shell
+> random chars -l 20
+ ```
+