minor #12924 [Messenger] Redis example with Unix Socket (JJarrie)

This PR was merged into the master branch.

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[Messenger] Redis example with Unix Socket

This is the documentation change for symfony/symfony#35295 .

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13af194 [Messenger] Redis example with Unix Socket

Author: javiereguiluz

messenger.rst

@@ -885,6 +885,8 @@ The Redis transport uses `streams`_ to queue messages.
     MESSENGER_TRANSPORT_DSN=redis://localhost:6379/messages
     # Full DSN Example
     MESSENGER_TRANSPORT_DSN=redis://password@localhost:6379/messages/symfony/consumer?auto_setup=true&serializer=1&stream_max_entries=0&dbindex=0
+    # Unix Socket Example
+    MESSENGER_TRANSPORT_DSN=redis:///var/run/redis.sock
 
 To use the Redis transport, you will need the Redis PHP extension (>=4.3) and
 a running Redis server (^5.0).