Fix mkdocs-deploy rules.

Signed-off-by: Rahul Krishna <[email protected]>

Author: rahlk

.github/workflows/mkdocs-deploy.yml

@@ -2,7 +2,7 @@ name: mkdocs-deploy
 on:
   push:
     branches:
-      - docs 
+      - main 
 
 permissions:
   contents: write