minor #14535 [Messenger] Fix a typo on Messenger handler results example (alepdev)

This PR was submitted for the 4.2 branch but it was merged into the 4.4 branch instead.

Discussion
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[Messenger] Fix a typo on Messenger handler results example

This fixes typo on the Messenger handler results sample snippet by renaming `Result` object since the definition in the import and the name used in the return type of the function did not match.

I fixed with `ListItemsResult` instead of `ListItemsQueryResult` but tell me which one is better.

Commits
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1e4a70f Fix a typo on Messenger handler results example

Author: javiereguiluz

messenger/handler_results.rst

@@ -40,7 +40,7 @@ handler is registered. The ``HandleTrait`` can be used in any class that has a
     namespace App\Action;
 
     use App\Message\ListItemsQuery;
-    use App\MessageHandler\ListItemsQueryResult;
+    use App\MessageHandler\ListItemsResult;
     use Symfony\Component\Messenger\HandleTrait;
     use Symfony\Component\Messenger\MessageBusInterface;