Update README.md

Author: gkorland

README.md

@@ -12,7 +12,7 @@
 # JRedisJSON
 
 [![Forum](https://img.shields.io/badge/Forum-RedisJSON-blue)](https://forum.redislabs.com/c/modules/redisjson)
-[![Gitter](https://badges.gitter.im/RedisLabs/RedisJSON.svg)](https://gitter.im/RedisLabs/RedisJSON?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![Discord](https://img.shields.io/discord/697882427875393627?style=flat-square)](https://discord.gg/QUkjSsk)
 
 
 A Java Client Library for [RedisJSON](https://github.com/RedisJSON/RedisJSON)