[update] lang menu template

views/menu.xml

@@ -48,7 +48,7 @@
                         <span data-oe-model="website.menu" data-oe-field="name" data-oe-type="char" data-oe-expression="submenu.name">Contact us</span>
                     </a>
                 </li>
-                <li class="lang">
+                <li class="lang" t-if="len(languages) > 1">
                     <div class="flex-lang">
                         <div class="lang-bloc js_language_selector mb0 list-inline">
                             <a class="js_change_lang" href="/en_US/" data-default-lang="true" data-lang="en_US">