Apply coding style (#65)

Author: tangrufus

.github/workflows/dependabot-auto-merge.yml

@@ -48,6 +48,6 @@ jobs:
           || (inputs.patch && steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch')
         run: gh pr merge --auto "--$STRATEGY" "$PR_URL"
         env:
-          PR_URL: ${{github.event.pull_request.html_url}}
+          PR_URL: ${{ github.event.pull_request.html_url }}
           GH_TOKEN: ${{ github.token }}
           STRATEGY: ${{ inputs.strategy }}