Auto-generate markdown command docs (#4451)

* Finish updating

* a couple improvements

* Update renames

* cleanup examples

docs/commands/from_xml.md

@@ -0,0 +1,22 @@
+---
+title: from xml
+layout: command
+version: 0.59.0
+---
+
+Parse text as .xml and create table.
+
+## Signature
+
+```> from xml ```
+
+## Examples
+
+Converts xml formatted string to table
+```shell
+> '<?xml version="1.0" encoding="UTF-8"?>
+<note>
+  <remember>Event</remember>
+</note>' | from xml
+```
+