Updated the Discord link in the readme

Author: jmwright

README.md

@@ -122,7 +122,7 @@ You can find the full CadQuery documentation at [cadquery.readthedocs.io](https:
 
 We also have a [Google Group](https://groups.google.com/forum/#!forum/cadquery) to make it easy to get help from other CadQuery users. We want you to feel welcome and encourage you to join the group and introduce yourself. We would also love to hear what you are doing with CadQuery.
 
-There is a [Discord channel](https://discord.gg/qz3uAdF) as well. A big thanks goes to the Elmer team for hosting us.
+There is a [Discord server](https://discord.gg/Bj9AQPsCfx) as well. You can ask for help in the _general_ channel.
 
 ## Projects using CadQuery