Fix line terminations and dupe links

docs/modules/clients/pages/java.adoc

@@ -1341,6 +1341,7 @@ ClientConfig clientConfig = new ClientConfig();
 ClientNetworkConfig networkConfig = clientConfig.getNetworkConfig();
 networkConfig.getClusterRoutingConfig().setRoutingMode(RoutingMode.ALL_MEMBERS);
 ----
+--
 ====
 
 **Client SINGLE_MEMBER routing**
@@ -1396,6 +1397,7 @@ ClientConfig clientConfig = new ClientConfig();
 ClientNetworkConfig networkConfig = clientConfig.getNetworkConfig();
 networkConfig.getClusterRoutingConfig().setRoutingMode(RoutingMode.SINGLE_MEMBER);
 ----
+--
 ====
 
 **Client MULTI_MEMBER routing**
@@ -1465,6 +1467,7 @@ networkConfig.getClusterRoutingConfig().setRoutingMode(RoutingMode.MULTI_MEMBER)
 // PARTITION_GROUPS is the default strategy, so it does not need to be explicitly defined
 networkConfig.getClusterRoutingConfig().setRoutingStrategy(RoutingStrategy.PARTITION_GROUPS);
 ----
+--
 ====
 
 TIP: If you are using the `smart` or `unisocket` client operation modes, select **5.4** from the version picker above the navigation pane to see the configuration information. The cluster routing mode described above must not be present in your configuration.
@@ -1808,7 +1811,7 @@ the client will not be able to reach the members.
 
 Hazelcast provides the following client services.
 
-==== Use distributed executor service
+=== Use distributed executor service
 
 The distributed executor service is for distributed computing.
 It can be used to execute tasks on the cluster on a designated partition or on all the partitions.
@@ -1822,7 +1825,7 @@ After getting an instance of `IExecutorService`, you can use the instance as
 the interface with the one provided on the server side. See
 xref:computing:distributed-computing.adoc[] for detailed usage.
 
-==== Listen to client connections
+=== Listen to client connections
 
 If you need to track clients and want to listen to their connection events,
 you can use the `clientConnected()` and `clientDisconnected()` methods of the `ClientService` class.
@@ -1833,7 +1836,7 @@ This class must be run on the **member** side. The following code shows an examp
 include::ROOT:example$/clients/ListeningClients.java[tag=lc]
 ----
 
-==== Find the partition of a key
+=== Find the partition of a key
 
 You use the partition service to find the partition of a key.
 It returns all partitions. See the example code below:
@@ -1849,7 +1852,7 @@ Partition partition = partitionService.getPartition(key);
 Set<Partition> partitions = partitionService.getPartitions();
 ----
 
-==== Handling Lifecycle
+=== Handling Lifecycle
 
 Lifecycle handling performs: