fix ban page access

core/templates/core/user_tools.jinja

@@ -23,7 +23,7 @@
               <li><a href="{{ url('rootplace:operation_logs') }}">{% trans %}Operation logs{% endtrans %}</a></li>
               <li><a href="{{ url('rootplace:delete_forum_messages') }}">{% trans %}Delete user's forum messages{% endtrans %}</a></li>
             {% endif %}
-            {% if user.has_perm("core:view_userban") %}
+            {% if user.has_perm("core.view_userban") %}
               <li><a href="{{ url("rootplace:ban_list") }}">{% trans %}Bans{% endtrans %}</a></li>
             {% endif %}
             {% if user.can_create_subscription or user.is_root %}