Update readme, add discord badge&link

README.md

@@ -2,6 +2,7 @@
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 ![UI for Apache Kafka Price Free](images/free-open-source.svg)
+[![Chat with us](https://img.shields.io/discord/897805035122077716)](https://discord.gg/4DWzD7pGE5)
 
 <em>UI for Apache Kafka is a free, open-source web UI to monitor and manage Apache Kafka clusters. </em>