Update docs to: Update navigation

Author: github-actions[bot]

mkdocs.yml

@@ -27,8 +27,10 @@ nav:
  - Structure:
  - Modes: modes.md
  - Action Scripts: action_scripts.md
- - Contribution:
+ - Developer Guides:
+ - Contributing Guide: contributing.md
  - Contribution Types: contribution_types.md
+ - Open In Godot (Build): build.md
 
 theme:
  name: readthedocs