Update github-actions-demo.yml

.github/workflows/github-actions-demo.yml

@@ -5,5 +5,14 @@ jobs:
   Explore-GitHub-Actions:
     runs-on: ubuntu-latest
     steps:
-    - name: Create comment
+      - name: Create comment
-      uses: peter-evans/create-or-update-comment@v2
+        uses: peter-evans/create-or-update-comment@v2
+        with:
+          issue-number: 1
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reactions: '+1'