Merge branch 'site' into fix-previous-versions

Author: Tony-Y

_includes/main_menu.html

@@ -74,6 +74,9 @@
             <span class="dropdown-title">ExecuTorch</span>
             <p>End-to-end solution for enabling on-device inference capabilities across mobile and edge devices</p>
           </a>
+          <a class="nav-dropdown-item" target="_blank" href="https://pytorch.org/executorch/stable/index.html">
+            <span class="dropdown-title">ExecuTorch Documentation</span>
+          </a>
         </div>
       </div>
     </li>

_includes/mobile_menu.html

@@ -73,6 +73,9 @@
           <li>
             <a href="{{ site.baseurl}}/executorch-overview">ExecuTorch</a>
           </li>
+          <li>
+            <a href="https://pytorch.org/executorch/stable/index.html">ExecuTorch Documentation</a>
+          </li>
         </ul>
         <li class="resources-mobile-menu-title">
           <a>Docs</a>

pytorch-domains.html

@@ -95,6 +95,13 @@ <h4>torchtext</h4>
             </p>
           </a>
         </div>
+        <div class="col-sm-5 domain-card">
+          <a href="https://pytorch.org/executorch/stable/index.html">
+            <h4>ExecuTorch</h4>
+            <p>ExecuTorch is a PyTorch platform that provides infrastructure to run PyTorch programs everywhere from AR/VR wearables to standard on-device iOS and Android mobile deployments.
+            </p>
+          </a>
+        </div>
       </div>
     </div>
   </div>