Correct a 4.1.2 release notes formatting issue

(cherry picked from commit e019a4e)

Author: michaelklishin

release-notes/4.1.2.md

@@ -29,7 +29,7 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
 #### Bug Fixes
 
- = Multiple stream and stream SAC (Single Active Consumer) coordinator resilience improvements.
+ * Multiple stream and stream SAC (Single Active Consumer) coordinator resilience improvements.
 
    GitHub issues: [#14107](https://github.com/rabbitmq/rabbitmq-server/pull/14107), [#14085](https://github.com/rabbitmq/rabbitmq-server/pull/14085), [#14070](https://github.com/rabbitmq/rabbitmq-server/issues/14070)