Move notification_settings route under - scope

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

config/routes.rb

@@ -133,6 +133,9 @@ Rails.application.routes.draw do
         get :kill
       end
     end
+
+    # Notification settings
+    resources :notification_settings, only: [:create, :update]
   end
 
   concern :clusterable do
@@ -181,9 +184,6 @@ Rails.application.routes.draw do
   # Spam reports
   resources :abuse_reports, only: [:new, :create]
 
-  # Notification settings
-  resources :notification_settings, only: [:create, :update]
-
   resources :groups, only: [:index, :new, :create] do
     post :preview_markdown
   end