Update link to demo.

Author: QianhuiWu

index.html

@@ -139,12 +139,12 @@ <h1 class="title is-2 publication-title">GUI-Actor: Coordinate-Free Visual Groun
                       </span>
 
                     <span class="link-block">
-                      <a href="https://huggingface.co/spaces/microsoft/GUI-Actor"
+                      <a href="https://github.com/microsoft/GUI-Actor/tree/main/demo"
                          class="external-link button is-normal is-rounded is-dark">
                         <span class="icon">
                             <img src="static/images/hf_icon.svg" />
                         </span>
-                        <span>Hugging Face Space</span>
+                        <span>Demo</span>
                         </a>
                       </span>
                 </div>