Auto-generate markdown command docs (#4451)

* Finish updating

* a couple improvements

* Update renames

* cleanup examples

docs/commands/str_ends-with.md

@@ -0,0 +1,29 @@
+---
+title: str ends-with
+layout: command
+version: 0.59.0
+---
+
+checks if string ends with pattern
+
+## Signature
+
+```> str ends-with (pattern) ...rest```
+
+## Parameters
+
+ -  `pattern`: the pattern to match
+ -  `...rest`: optionally matches suffix of text by column paths
+
+## Examples
+
+Checks if string ends with '.rb' pattern
+```shell
+> 'my_library.rb' | str ends-with '.rb'
+```
+
+Checks if string ends with '.txt' pattern
+```shell
+> 'my_library.rb' | str ends-with '.txt'
+```
+