[no ci] [doc] [ra-core] Only deploy ra-core docs on merge on master

Author: slax57

.github/workflows/deploy-doc-headless.yml

@@ -3,8 +3,9 @@ on:
     push:
         branches:
             - master
-            - next # TODO remove
-            - headless-doc-content # TODO remove
+
+    # Allows you to run this workflow manually from the Actions tab
+    workflow_dispatch:
 
 concurrency:
     group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}