4.1.0 release notes: upgrades from 3.13.x are supported

Author: michaelklishin

release-notes/4.1.0.md

@@ -90,10 +90,10 @@ There is a `4.1.0` preview version of the [community RabbitMQ image](https://git
 See the [Upgrading guide](https://www.rabbitmq.com/docs/upgrade) for documentation on upgrades and [GitHub releases](https://github.com/rabbitmq/rabbitmq-server/releases)
 for release notes of individual releases.
 
-This release series only supports upgrades from `4.0.x`.
+This release series supports upgrades from `4.0.x` and `3.13.x`.
 
-[Blue/Green Deployment](https://www.rabbitmq.com/docs/blue-green-upgrade)-style upgrades are avaialble for migrations from 3.12.x and 3.13.x series
-to `4.1.x`.
+[Blue/Green Deployment](https://www.rabbitmq.com/docs/blue-green-upgrade)-style upgrades are avaialble for migrations
+from RabbitMQ `3.12.x` series.
 
 ### Required Feature Flags