fix folder name

src/Bundle/ChillMainBundle/config/services/notification.yaml

@@ -0,0 +1,10 @@
+services:
+    Chill\MainBundle\Notification\Mailer:
+        arguments:
+            $logger: '@Psr\Log\LoggerInterface'
+            $twig: '@Twig\Environment'
+            $mailer: '@swiftmailer.mailer.default'
+          # $mailerTransporter: '@swiftmailer.transport'
+            $router: '@Symfony\Component\Routing\RouterInterface'
+            $translator: '@Symfony\Component\Translation\TranslatorInterface'
+            $routeParameters: '%chill_main.notifications%'