minor #19434 Small typo fix in Messenger documentation (mathroc)

This PR was submitted for the 7.0 branch but it was merged into the 5.4 branch instead.

Discussion
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Small typo fix in Messenger documentation

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Commits
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efc058d Small typo fix in Messenger documentation

Author: OskarStark

messenger.rst

@@ -564,7 +564,7 @@ different messages to them. For example:
                             #    name: high
                             #queues:
                             #    messages_high: ~
-                            # or redis try "group"
+                            # for redis try "group"
                     async_priority_low:
                         dsn: '%env(MESSENGER_TRANSPORT_DSN)%'
                         options: