Modify dev docs deployment (#196)

Co-authored-by: Maxime Rey <[email protected]>

Author: Revathyvenugopal162

.github/workflows/ci_cd.yml

@@ -49,7 +49,7 @@ jobs:
 
   doc-deploy-development:
     name: Doc dev version deploy
-    if: github.event_name == 'push'
+    if: ${{ github.ref == 'refs/heads/main' }}
     runs-on: ubuntu-latest
     needs: doc-build
     steps: