chore(azure-preview-workflow): include title in branch preview comment

Author: cdransf

.github/scripts/build-preview-urls-comment.js

@@ -17,5 +17,8 @@ export const buildPreviewURLComment = (prNumber) => {
     const prHash = `pr-${prNumber}`;
     const baseUrl = 'https://spectrumcss.z13.web.core.windows.net';
 
-    return `PR #${prNumber} has been deployed to Azure Blob Storage: ${baseUrl}/${prHash}/index.html.`;
+    return `## 📚 Branch preview
+
+PR #${prNumber} has been deployed to Azure Blob Storage: [${baseUrl}/${prHash}/index.html](${baseUrl}/${prHash}/index.html).`;
+
 };

.github/workflows/publish-site.yml

@@ -108,7 +108,7 @@ jobs:
             const { commentOrUpdate } = await import('${{ github.workspace }}/.github/scripts/comment-or-update.js');
             const prNumber = context.payload.pull_request.number;
             const body = buildPreviewURLComment(prNumber);
-            commentOrUpdate(github, context, '## 📚 Branch Preview', body);
+            commentOrUpdate(github, context, '## 📚 Branch preview', body);
 
   close_pull_request_job:
     if: github.event_name == 'pull_request' && github.event.action == 'closed'