fix: run docs action only on main (#5)

Signed-off-by: Moritz Johner <[email protected]>

Author: moritzjohner-form3

Diff for: .github/workflows/docs.yaml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - main
-      - mj-deploy-docs
 
 permissions:
   contents: read