add robots, add variables, change docs

.github/workflows/deploy.yml

@@ -11,6 +11,8 @@ jobs:
       name: github-pages
     name: Deploy to GitHub Pages
     runs-on: ubuntu-latest
+    env:
+      GOOGLE_ANALYTICS_TAG_ID: ${{ secrets.GOOGLE_ANALYTICS_TAG_ID }}
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
@@ -29,6 +31,3 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./build
-      
-      # - name: GitHub Pages change URL
-      #   run: bash github-page-url.sh