minor #17857 Update notifier.rst (Knallcharge)

This PR was submitted for the 6.2 branch but it was merged into the 5.4 branch instead.

Discussion
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Update notifier.rst

fixed typo

Commits
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9c17243 Update notifier.rst

Author: OskarStark

notifier.rst

@@ -903,7 +903,7 @@ is dispatched. Listeners receive a
         $message = $event->getOriginalMessage();
 
         // log something
-        $this->logger(sprintf('The message has been successfully sent and have id: %s, $message->getMessageId()'));
+        $this->logger(sprintf('The message has been successfully sent and has id: %s, $message->getMessageId()'));
     });
 
 .. TODO