fix: language selector for redwood

fccn/nau-technical#187

edx-platform/nau-basic/lms/templates/header/language-selector.html

@@ -18,7 +18,7 @@
         % if user.is_authenticated:
           <input title="preference api" type="hidden" class="url-endpoint" value="${reverse('preferences_api', kwargs={'username': user.username})}" data-user-is-authenticated="true">
         % else:
-          <input title="session update url" type="hidden" class="url-endpoint" value="${reverse('session_language')}" data-user-is-authenticated="false">
+          <input title="session update url" type="hidden" class="url-endpoint" value="${reverse('update_language')}" data-user-is-authenticated="false">
         % endif            
         <label><span class="sr">${_("Choose Language")}</span>
         <select class="input select language-selector" id="settings-language-value" name="language" onchange="this.form.submit()">