Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/drop.md

@@ -0,0 +1,28 @@
+# drop
+Remove the last number of rows or columns.
+
+## Usage
+```shell
+> drop (rows) <subcommand> {flags} 
+ ```
+
+## Subcommands
+* drop column - Remove the last number of columns. If you want to remove columns by name, try 'reject'.
+
+## Parameters
+* `(rows)` starting from the back, the number of rows to remove
+
+## Flags
+* -h, --help: Display this help message
+
+## Examples
+  Remove the last item of a list/table
+```shell
+> echo [1 2 3] | drop
+ ```
+
+  Remove the last 2 items of a list/table
+```shell
+> echo [1 2 3] | drop 2
+ ```
+