Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/split-by.md

@@ -0,0 +1,14 @@
+# split-by
+Creates a new table with the data from the inner tables split by the column given.
+
+## Usage
+```shell
+> split-by (column_name) {flags} 
+ ```
+
+## Parameters
+* `(column_name)` the name of the column within the nested table to split by
+
+## Flags
+* -h, --help: Display this help message
+