minor #9792 Changed a link that does not exist in github (rafalmnich)

This PR was merged into the 4.1 branch.

Discussion
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Changed a link that does not exist in github

Probably the repo has moved, or something. I've changed the link to a working one.

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Commits
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1fe39cd Changed a link that does not exist in github

Author: javiereguiluz

messenger.rst

@@ -353,4 +353,4 @@ will give you access to the following services:
 #. ``messenger.sender.yours``: the sender.
 #. ``messenger.receiver.yours``: the receiver.
 
-.. _`enqueue's transport`: https://github.com/enqueue/messenger-adapter
+.. _`enqueue's transport`: https://github.com/php-enqueue/messenger-adapter