Fix docfx workflow to remove unnecessary condition

Author: Daespen

.github/workflows/docfx-build-publish.yml

@@ -22,7 +22,6 @@ jobs:
         args: docs/docfx.json
 
     - name: Publish
-      if: github.event_name == 'push'
       uses: peaceiris/actions-gh-pages@v3
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}