docs: migrating to kraft is now supported (#938)

* docs:  migrating to kraft is now supported

* Update docs/modules/kafka/partials/supported-versions.adoc

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

---------

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

Author: razvan

docs/modules/kafka/partials/supported-versions.adoc

@@ -2,11 +2,10 @@
 // This is a separate file, since it is used by both the direct Kafka documentation, and the overarching
 // Stackable Platform documentation.
 
-* 4.1.1 (experimental)
+* 4.1.1 (experimental) - Requires KRaft, please read on the xref:kafka:usage-guide/kraft-controller.adoc[Kraft migration guide].
 * 3.9.1 (LTS)
 
 Support for clusters running in Kraft mode (which includes Apache Kafka 4.x.x) is experimental because it has not been thoroughly tested in production environments yet.
-Migrations from older Kafka version which used Apache Zookeeper for cluster coordination to the new KRaft mode are not supported yet.
 
 Also there are some known issues such as: