Update single-file-example.html

Author: paw3995-z

public/html/single-file-example.html

@@ -14,7 +14,7 @@
     <script type="text/babel">
 
       ReactDOM.render(
-        <h1>Hello, world!</h1>,
+        <h1>Ola, tudo baoooooo! www.youtube.com/@Podpah</h1>,
         document.getElementById('root')
       );