added workflow_dispatch

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

@@ -1,16 +1,16 @@
 name: GitHub Actions Demo
 run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
-on: [push]
+on: [push, workflow_dispatch]
 jobs:
   Explore-GitHub-Actions:
     runs-on: ubuntu-latest
     steps:
       - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
       - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
-      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
+      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}. The github.actor is ${{ github.actor }}."
       - name: Check out repository code
         uses: actions/checkout@v3
-      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner. The github.actor is ${{ github.actor }}. "
+      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner. "
       - run: echo "🖥️ The workflow is now ready to test your code on the runner."
       - name: List files in the repository
         run: |