Add example of the Cypher script

Author: NataliaIvakina

modules/ROOT/pages/tools/neo4j-admin/neo4j-admin-import.adoc

@@ -435,6 +435,14 @@ It currently only works for full import.
 You should have a Cypher script containing only `CREATE INDEX|CONSTRAINT` commands to be parsed and executed.
 This file uses ';' as the separator.
 
+For example:
+
+[source, cypher, role=nocopy]
+----
+CREATE INDEX PersonNameIndex FOR (i:Person) ON (i.name);
+CREATE CONSTRAINT PersonAgeConstraint FOR (c:Person) REQUIRE c.age IS :: INTEGER
+----
+
 List of supported indexes and constraints that can be created by the import tool:
 
 * RANGE