docs: update links to demo

README.md

@@ -1,6 +1,6 @@
 <br>
 
-<p align="center">
+<p align="center" style="margin-bottom: 15px;">
     <picture>
       <img src="./www/public/logo/advantage-logo.svg" height="80">
   </picture>
@@ -15,7 +15,7 @@
   </a>
 </p>
 <p align="center">
-    <a href="" target="blank">View Demo</a>
+    <a href="https://stackblitz.com/github/get-advantage/advantage/tree/main?file=playground%2Fgpt%2Findex.html" target="blank">View Demo</a>
     ·
     <a href="https://github.com/get-advantage/advantage/issues/new/choose">Report Bug</a>
     ·

www/docs/examples/hello-world.md

@@ -10,4 +10,4 @@ pageClass: docs
 
 A minimal application with Google Publisher Tag.
 
-<iframe src="https://stackblitz.com/edit/web-platform-gjxdfd?embed=1&file=index.html&theme=dark" sandbox="allow-modals allow-forms allow-popups allow-scripts allow-same-origin" class="w-full h-full min-h-[700px] overflow-hidden bg-gray-100 dark:bg-gray-800"></iframe>
+<iframe src="https://stackblitz.com/github/get-advantage/advantage/tree/main?ctl=1&embed=1&file=playground%2Fgpt%2Findex.html&hideExplorer=1&theme=dark" sandbox="allow-modals allow-forms allow-popups allow-scripts allow-same-origin" class="w-full h-full min-h-[700px] overflow-hidden bg-gray-100 dark:bg-gray-800"></iframe>