Improve formatting of replica database creation example

Formatted the example for creating a replica database for better readability.

Author: NataliaIvakina

modules/ROOT/pages/clustering/replicating-databases-across-clusters.adoc

@@ -73,7 +73,7 @@ cluster/
 
 
 [[create-replica]]
-=== Creating a replica database
+== Creating a replica database
 
 Use the following procedure to create a replica database.
 
@@ -97,7 +97,14 @@ On *Cluster B*, run the following procedure to create a replica database `foo-re
 [[create-replica-db-example]]
 [source, cypher]
 ----
-CALL internal.dbms.createReplicaDatabase("foo-replica", 3, 2, {remote: "foo", addresses:["server01.example.com:6000","server02.example.com:6000","server03.example.com:6000"]});
+CALL internal.dbms.createReplicaDatabase("foo-replica", 3, 2, {
+  remote: "foo",
+  addresses:[
+    "server01.example.com:6000",
+    "server02.example.com:6000",
+    "server03.example.com:6000"
+  ]
+});
 ----
 
 All replica databases are *read-only*.