ci: update GitHub workflows

Author: uwla

.github/workflows/gh-pages.yml renamed to .github/workflows/demo.yml

@@ -1,8 +1,8 @@
-name: GitHub Pages Sync
+name: Build demo app
 
 on:
   push:
-    branches: ["master"]
+    branches: ["vue3"]
 
 jobs:
   deploy:
@@ -24,12 +24,13 @@ jobs:
         run: npm install
 
       - name: Build demo
-        run: npm run build:demo
+        run: APP_BASE=/vue-form-builder/demo npm run build:demo
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: demo
           publish_dir: ./demo
+          destination_dir: demo
           commit_message: update demo

.github/workflows/tests.yml

@@ -1,7 +1,4 @@
-# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
-
-name: Node.js CI
+name: Automated tests
 
 on:
   push:
@@ -17,7 +14,6 @@ jobs:
     strategy:
       matrix:
         node-version: [16.x, 18.x, 20.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
     - uses: actions/checkout@v3