chore: code cleanup with rector and php-cs-fixer

src/Controller/Webhook/MailjetNewsletterWebhookController.php

@@ -55,6 +55,7 @@ final class MailjetNewsletterWebhookController extends AbstractController
      * into a list before dispatching.
      *
      * @param array<int|string, mixed> $payload
+     *
      * @return list<array<string, mixed>>
      */
     private function normalizeEvents(array $payload): array