uncomment on statement for github actions workflow

.github/workflows/main.yml

@@ -1,7 +1,7 @@
-# on:
-#   workflow_dispatch:
-#   push:
-#     branches: master
+on:
+  workflow_dispatch:
+  push:
+    branches: [master, index]
 name: Quarto Publish
 jobs:
   retrieve: