4.1.2 release notes: a typo

(cherry picked from commit e44eff2)

Author: michaelklishin

release-notes/4.1.2.md

@@ -50,7 +50,7 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
    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)
 
- * Consumer on a stream that was deleted could leak file descriptor.
+ * Consumer on a stream that was deleted could leak a file descriptor.
 
    GitHub issue: [#14143](https://github.com/rabbitmq/rabbitmq-server/pull/14143)