renamed the git action yml file

Author: omogbolahan94

.github/workflows/github-actions-demo.yml renamed to .github/workflows/build-deploy.yml

@@ -8,4 +8,5 @@ jobs:
       - name: Pushing git repo
         uses: actions/checkout@v2
       - name: Push action follow up message
-        run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+        run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+