trigger docs publish only for stable release

Author: mtrezza

.github/workflows/release-automated.yml

@@ -7,7 +7,11 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       current_tag: ${{ steps.tag.outputs.current_tag }}
+      trigger_branch: ${{ steps.branch.outputs.trigger_branch }}
     steps:
+      - name: Determine trigger branch name
+        id: branch
+        run: echo "::set-output name=trigger_branch::${GITHUB_REF#refs/*/}"
       - uses: actions/checkout@v2
         with:
           persist-credentials: false
@@ -34,11 +38,13 @@ jobs:
 
   docs-publish:
     needs: release
-    if: needs.release.outputs.current_tag != ''
+    if: needs.release.outputs.current_tag != '' && github.ref == 'refs/heads/release'
     runs-on: ubuntu-18.04
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.ref }}
       - name: Use Node.js
         uses: actions/setup-node@v1
         with: