DOC-312 fix for return to tiny.cloud link

_includes/template/menu.html

@@ -231,7 +231,7 @@
                class="link-menu header-my-account-button-mobile"
                data-marketing="docs-header-my-account">My Account</a>
 
-            <a class="link-menu" href="{{ site.shared_baseurl }}" data-marketing="docs-header-back-home">
+            <a class="link-menu" href="/" data-marketing="docs-header-back-home">
                 Return to Tiny.cloud
             </a>
         </nav>

_includes/template/notification.html

@@ -8,7 +8,7 @@
     </div>
 
     <div>
-        <a class="utility-link" href="{{ site.shared_baseurl }}" data-marketing="tiny-docs-news-back-home">
+        <a class="utility-link" href="/" data-marketing="tiny-docs-news-back-home">
             Return to Tiny.cloud
         </a>
     </div>