Automated documentation update [skip ci] (#36)

Co-authored-by: github-actions <github-actions@github.com>

Author: markphip

src/docfx/README.md

@@ -7,21 +7,25 @@ Installs docfx tools
 
 ```json
 "features": {
-    "ghcr.io/microsoft/codespace-features/docfx:1": {}
+    "ghcr.io/microsoft/codespace-features/docfx:2": {}
 }
 ```
 
+## Options
 
+| Options Id | Description | Type | Default Value |
+|-----|-----|-----|-----|
+| version | Select version of DocFX | string | 2.67.5 |
 
 ## Customizations
 
 ### VS Code Extensions
 
 - `yzhang.markdown-all-in-one`
 
-This feature currently only supports installing the latest published version
-of DocFX. If support for older versions are required please file an Issue or
-send a pull request.
+This feature installs the latest version compatible with Microsoft's internal documentation
+platform which is currently 2.67.5. You can install a different version or 'latest" by using
+the 'version' option.
 
 ## OS Support