Update _toc.yml

Author: ErinWeisbart

documentation/CP-plugins-documentation/_toc.yml

@@ -5,11 +5,10 @@ root: overview
 parts:
 - caption: Overview
   chapters:
-  - file: overview
   - file: using_plugins
   - file: supported_plugins
   - file: unsupported_plugins
   - file: contributing_plugins
   - file: troubleshooting
   - file: citing
-  - file: versions
+  - file: versions