Auto-generate markdown command docs (#4451)

* Finish updating

* a couple improvements

* Update renames

* cleanup examples

docs/commands/dfr_with-column.md

@@ -0,0 +1,24 @@
+---
+title: dfr with-column
+layout: command
+version: 0.59.0
+---
+
+Adds a series to the dataframe
+
+## Signature
+
+```> dfr with-column (series) --name```
+
+## Parameters
+
+ -  `series`: series to be added
+ -  `--name {string}`: column name
+
+## Examples
+
+Adds a series to the dataframe
+```shell
+> [[a b]; [1 2] [3 4]] | dfr to-df | dfr with-column ([5 6] | dfr to-df) --name c
+```
+