Update Vert.x dependency version to 5.0.0.CR2 (#1409)

docs/modules/integrate/pages/integrate-with-vertx.adoc

@@ -23,12 +23,14 @@ There are 2 modules to choose from:
 
 To use the Vert.x Hazelcast Enterprise Cluster Manager, add the following dependency to your Vert.x application:
 
+NOTE: The version `5.0.0.CR2` is a candidate release. A GA version will be released once Vert.x itself goes GA.
+
 [source,xml]
 ----
 <dependency>
   <groupId>com.hazelcast</groupId>
   <artifactId>vertx-hazelcast-enterprise</artifactId>
-  <version>5.0.0-SNAPSHOT</version>
+  <version>5.0.0.CR2</version>
 </dependency>
 ----
 
@@ -45,7 +47,8 @@ The dependency is located in the Hazelcast private repository, and you need to a
 </repositories>
 ----
 
-Alternatively, if you need to use a snapshot version:
+Alternatively, if you need to use a snapshot version (you should never use a snapshot version in production,
+but it might be useful to test if an issue has been fixed):
 
 [source,xml]
 ----