ci: fix syntax errors in release workflow (#709)

Author: fgreinacher

.github/workflows/release.yml

@@ -1,13 +1,17 @@
+name: Release
 on:
   release:
     types: [published]
 
 jobs:
   release:
+    name: Comment on relevant PRs and issues
+    runs-on: ubuntu-latest
     steps:
       - uses: apexskier/github-release-commenter@v1.2
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           comment-template: |
             This is addressed in release {release_link}.
-          label-template: state: released
+          label-template: |
+            state: released