Fixed preview of email notifications

test/mailers/previews/notifications_mailer_preview.rb

@@ -6,13 +6,17 @@ class NotificationsMailerPreview < ActionMailer::Preview
   # Preview this email at http://localhost:3000/rails/mailers/notifications_mailer/domain_expires_soon
   def domain_expires_soon
     check = Check.domain.first
-    NotificationsMailer.with(notification: check.notifications.first).domain_expires_soon
+    NotificationsMailer
+      .with(check_notification: check.check_notifications.first)
+      .domain_expires_soon
   end
 
   # Preview this email at http://localhost:3000/rails/mailers/notifications_mailer/ssl_expires_soon
   def ssl_expires_soon
     check = Check.ssl.first
-    NotificationsMailer.with(notification: check.notifications.first).ssl_expires_soon
+    NotificationsMailer
+      .with(check_notification: check.check_notifications.first)
+      .ssl_expires_soon
   end
 
   # Preview this email at http://localhost:3000/rails/mailers/notifications_mailer/recurrent_failures