Update remote-elasticsearch-output.md (#1602)

Using the Remote Elasticsearch output is an Enterprise feature, I wish
to display this information there.

---------

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

Author: tailorzed

reference/fleet/remote-elasticsearch-output.md

@@ -13,11 +13,15 @@ Remote {{es}} outputs allow you to send {{agent}} data to a remote {{es}} cluste
 A remote {{es}} cluster supports the same [output settings](/reference/fleet/es-output-settings.md) as your main {{es}} cluster.
 
 ::::{note}
-Note the following restrictions with the remote {es} output:
+This feature is part of the Enterprise subscription offering under the name of **Per Integration output assignment**. Refer to [Subscriptions](https://www.elastic.co/subscriptions) for more information.
+::::
+
+## Limitations
+
+These limitations apply to remote {es} output:
 
 * Using a remote {{es}} output with a target cluster that has [traffic filters](/deploy-manage/security/traffic-filtering.md) enabled is not currently supported.
 * Using {{elastic-defend}} is currently not supported when a remote {{es}} output is configured for an agent.
-::::
 
 ## Configuration