Update contrib.sink.string-json.neo4j.json

Author: conker84

kafka-connect-neo4j/docker/contrib.sink.string-json.neo4j.json

@@ -1,6 +1,9 @@
 {
-  "name": "Neo4jSinkConnector",
+  "name": "Neo4jSinkConnectorJSON",
   "config": {
+    "key.converter": "org.apache.kafka.connect.storage.StringConverter",
+    "value.converter": "org.apache.kafka.connect.json.JsonConverter",
+    "value.converter.schemas.enable": false,
     "topics": "my-topic",
     "connector.class": "streams.kafka.connect.sink.Neo4jSinkConnector",
     "errors.retry.timeout": "-1",
@@ -14,4 +17,4 @@
     "neo4j.encryption.enabled": false,
     "neo4j.topic.cypher.my-topic": "MERGE (p:Person{name: event.name, surname: event.surname}) MERGE (f:Family{name: event.surname}) MERGE (p)-[:BELONGS_TO]->(f)"
   }
-}
+}