-> menu fixes

Author: s-paquette

templates/share/site_header.html

@@ -107,7 +107,7 @@
                                 </button>
 
                                 <button class="item" title="Discourse">
-                                    <a href="" url="https://github.com/ImagingDataCommons/idc-index"
+                                    <a href="" url="https://discourse.canceridc.dev"
                                         class="external-link" data-toggle="modal"
                                         data-target="#external-web-warning" title="Discourse"
                                     >
@@ -135,7 +135,7 @@
                                     </a>
                                 </button>
                                 <button class="item" title="MHub">
-                                    <a href="" url="https://mhub.ai/" class="external-link" title="MHub">
+                                    <a href="" url="https://mhub.ai/models" class="external-link" title="MHub">
                                         <img class="grid-icon" src="{% static 'img/mhub_2.svg' %}" alt="MHub Logo" />
                                         AI<br/> Models<i class="fa-solid fa-external-link external-link-icon" aria-hidden="true"></i>
                                     </a>