Update schema-registry-concepts.md

Author: axisc

articles/event-hubs/schema-registry-concepts.md

@@ -34,7 +34,7 @@ To learn more about using Avro schema format with Event Hubs Schema Registry, se
 - [How to use schema registry with Kafka and Avro](schema-registry-kafka-java-send-receive-quickstart.md)
 - [How to use Schema registry with Event Hubs .NET SDK (AMQP) and Avro.](schema-registry-dotnet-send-receive-quickstart.md)
 
-#### JSON Schema (Preview)
+#### JSON Schema
 [JSON Schema](https://json-schema.org/) is a standardized way of defining the structure and data types of the events. JSON Schema enables the confident and reliable use of the JSON data format in event streaming. 
 
 To learn more about using JSON schema format with Event Hubs Schema Registry, see: