Add a warning about removing disc.service v1 (neo4j#1947)

Author: NataliaIvakina

modules/ROOT/pages/clustering/setup/discovery.adoc

@@ -11,10 +11,12 @@ Neo4j provides several mechanisms for cluster members to discover each other and
 
 [IMPORTANT]
 ====
-From Neo4j 5.23, a new version v2 has been introduced.
-The new version v2 is recommended for new deployments.
-The current version v1 has been deprecated.
-However, existing deployments can continue to use the current version v1 in all Neo4j 5.x versions.
+In Neo4j 5.23, the discovery service v2 has been introduced.
+The new version, v2, is recommended for new deployments.
+
+The current version, v1, has been deprecated and will be removed in a future release.
+Therefore, it is highly recommended to move from v1 to v2.
+For details, see <<clustering-discovery-v1-to-v2, Moving from discovery service v1 to v2>>.
 ====
 
 The new version v2 introduces the following configuration settings to control the discovery service: