Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/str-upcase.md

@@ -0,0 +1,20 @@
+# str upcase
+upcases text
+
+## Usage
+```shell
+> str upcase ...args {flags} 
+ ```
+
+## Parameters
+* ...args: optionally upcase text by column paths
+
+## Flags
+* -h, --help: Display this help message
+
+## Examples
+  Upcase contents
+```shell
+> echo 'nu' | str upcase
+ ```
+