Fix documentation for Cassandra module

Author: maximevw

docs/modules/databases/cassandra.md

@@ -5,7 +5,7 @@
 This example connects to the Cassandra Cluster, creates a keyspaces and asserts that is has been created.
 
 <!--codeinclude-->
-[Building CqlSession](../../../modules/cassandra/src/test/java/org/testcontainers/containers/CassandraDriver3Test.java) inside_block:cassandra
+[Building CqlSession](../../../modules/cassandra/src/test/java/org/testcontainers/containers/CassandraDriver4Test.java) inside_block:cassandra
 <!--/codeinclude-->
 
 !!! warning

modules/cassandra/src/test/java/org/testcontainers/containers/CassandraDriver4Test.java

@@ -16,11 +16,13 @@ public class CassandraDriver4Test {
     @Test
     public void testCassandraGetContactPoint() {
         try (
+            // cassandra {
             CqlSession session = CqlSession
                 .builder()
                 .addContactPoint(this.cassandra.getContactPoint())
                 .withLocalDatacenter(this.cassandra.getLocalDatacenter())
                 .build()
+            // }
         ) {
             session.execute(
                 "CREATE KEYSPACE IF NOT EXISTS test WITH replication = \n" +