Use a shorter issue number here

Author: michaelklishin

release-notes/3.11.10.md

@@ -66,7 +66,7 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
 
  * The `auth_oauth2.preferred_username_claims` key in `rabbitmq.conf` now accepts a list of values.
 
-   GitHub issue: [rabbitmq/rabbitmq-server#7458](https://github.com/rabbitmq/rabbitmq-server/pull/7458)
+   GitHub issue: [#7458](https://github.com/rabbitmq/rabbitmq-server/pull/7458)
 
 
 ## Dependency Upgrades