Auto-generate markdown command docs (#4451)

* Finish updating

* a couple improvements

* Update renames

* cleanup examples

docs/commands/from_ics.md

@@ -0,0 +1,20 @@
+---
+title: from ics
+layout: command
+version: 0.59.0
+---
+
+Parse text as .ics and create table.
+
+## Signature
+
+```> from ics ```
+
+## Examples
+
+Converts ics formatted string to table
+```shell
+> 'BEGIN:VCALENDAR
+END:VCALENDAR' | from ics
+```
+