Added Discord to community list

Author: monzool

docs/community.md

@@ -14,8 +14,9 @@ News and community works are broadcasted on this site's blog and on Twitter.
 
 ## Questions
 
-The community tend to congragate in the following forums:
+The community tend to congregate in the following forums:
 
-- [Fable Gitter](https://gitter.im/fable-compiler/Fable)
+- [FSharp Discord](https://discord.com/servers/fsharp-196693847965696000)
 - [F# Software Foundation Slack](https://fsharp.org/guides/slack/)
 - [F# Reddit](https://www.reddit.com/r/fsharp/)
+- [Fable Gitter](https://gitter.im/fable-compiler/Fable) - Inoperative, but still available for referencing old topics.