🎨 add minor improvements

.github/workflows/template_do_not_merge.yml

@@ -17,10 +17,9 @@ jobs:
     # contains(search, item) is not case-sensitive
     # Therefore 'Do Not Merge' and 'DO NOT MERGE' will also match
     # see https://docs.github.com/en/actions/learn-github-actions/expressions#contains
-    if: contains(github.event.pull_request.labels.*.name, ${{ inputs.label }})
-
     steps:
       - name: fail if label exists
+        if: contains(github.event.pull_request.labels.*.name, ${{ inputs.label }})
         run: |
           echo "This PR has the label '${{ inputs.label }}'."
           exit 1