Fix a 4.1.1 release notes typo

Author: michaelklishin

release-notes/4.1.1.md

@@ -5,7 +5,7 @@ RabbitMQ `4.1.1` is a maintenance release in the `4.1.x` [release series](https:
 Starting June 1st, 2024, community support for this series will only be provided to [regularly contributing users](https://github.com/rabbitmq/rabbitmq-server/blob/main/COMMUNITY_SUPPORT.md) and those
 who hold a valid [commercial support license](https://tanzu.vmware.com/rabbitmq/oss).
 
-It is **strongly recommended** that you read [4.1 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.0)
+It is **strongly recommended** that you read [4.1.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.0)
 in detail if upgrading from a version prior to `4.1.0`.