Try fancier string concatenation

(with previous commit, details_url was still not showing our custom value during or after run)

Author: Scotchester

.github/workflows/check-links.yml

@@ -20,7 +20,7 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           sha: ${{ github.event.commit.sha }}
           name: Check for broken links
-          details_url: https://github.com/compilerla/actions-testing/actions/runs/${{ github.run_id }}
+          details_url: ${{ format('https://github.com/compilerla/actions-testing/actions/runs/{0}', github.run_id) }}
           status: in_progress
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # 7.0.1
         with:
@@ -36,7 +36,7 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           check_id: ${{ steps.init.outputs.check_id }}
-          details_url: https://github.com/compilerla/actions-testing/actions/runs/${{ github.run_id }}
+          details_url: ${{ format('https://github.com/compilerla/actions-testing/actions/runs/{0}', github.run_id) }}
           status: completed
           conclusion: ${{ job.status }}