Revert "Update jekyll-gh-pages.yml"

This reverts commit 4d36183.

Author: Phu2

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

@@ -9,7 +9,7 @@ name: Deploy Jekyll site to Pages
 on:
   # Runs on pushes targeting the default branch
   push:
-    branches: ["28-use-jekyll-theme"]
+    branches: ["master", "28-use-jekyll-theme"]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: