Update jekyll-gh-pages.yml

.github/workflows/jekyll-gh-pages.yml

@@ -4,7 +4,7 @@ name: Deploy Jekyll with GitHub Pages dependencies preinstalled
 on:
   # Runs on pushes targeting the default branch
   push:
-    branches: ["gh-pages"]
+    branches: [$default-branch]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: