Update html.html

html.html

@@ -904,7 +904,7 @@ <h2>Support legend</h2>
           <tr>
             <th scope="row"> <a href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element"><code>dialog</code></a>
             </th>
-            <td> <a href="https://cdpn.io/pen/debug/ZPQNLP">dialog test</a> </td>
+            <td> <a href="https://stevefaulkner.github.io/AT-browser-tests/test-files/dialog.html">dialog test</a> </td>
             <td>The dialog element represents a transitory part of an application, in the form of a small window ("dialog box")</td>
             <td>&nbsp;</td>
             <td>&nbsp;</td>