Fix the user-manage-organisations modal (column name & search)

templates/modals/user-manage-organisations.html.twig

@@ -13,6 +13,7 @@
                 <tr>
                     <th>{{translate("NAME")}}</th>
                     <th>{{translate("DESCRIPTION")}}</th>
+                    <th>{{translate("IS_ADMINISTRATOR")}}</th>
                     <th>{{translate("REMOVE")}}</th>
                 </tr>
             </thead>