fix: "" is not valid http(s) URL

.github/workflows/static.yml

@@ -23,32 +23,34 @@ jobs:
   deploy:
     environment:
       name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
+      # url: ${{ steps.deployment.outputs.page_url }}
+      url: https://delbetu.github.io/prawn_box/
+
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-        
+
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3.3.0
           bundler-cache: true
-          
+
       - name: Install dependencies
         run: bundle install
-        
+
       - name: Build static site
         run: rake build_site
-        
+
       - name: Setup Pages
         uses: actions/configure-pages@v5
-        
+
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
           path: './dist' # where the site was built
-          
+
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4