Update ci.yml

tweak

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: CI/CD
+
+on:
+  push:
+    branches:
+      - gh-pages
+
+jobs:
+  ci-cd:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+      with:
+        node-version: 20
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: 20
+        registry-url: https://registry.npmjs.org/
+        cache: npm
+