feature #13005 [Messenger] Document Redis TLS support (Nyholm)

This PR was merged into the master branch.

Discussion
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[Messenger] Document Redis TLS support

This will fix #13003

Commits
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37ce66c [Messenger] Document Redis TLS support

Author: OskarStark

messenger.rst

@@ -913,6 +913,7 @@ stream_max_entries  The maximum number of entries which    ``0`` (which means "n
                     the stream will be trimmed to. Set
                     it to a large enough number to
                     avoid losing pending messages
+tls                 Enable TLS support for the connection  false
 ==================  =====================================  =========================
 
 In Memory Transport