fix tag pages to emit to tag/index.html to override content and folder pages

Jacky Zhao

2023-07-20 01d7d8e55448abe0a929d8730c735bed5d929048

 .github/workflows/ci.yaml

@@ -6,7 +6,7 @@
      - v4-alpha # TODO: update

jobs:
  deploy:
  build-and-test:
    runs-on: ubuntu-22.04
    permissions:
      contents: write