An invite.

SUPPORT.md

@@ -7,7 +7,7 @@ following guidelines.
 
 Questions regarding the usage of Principia are best directed to the [Discord
 channel for
-Principia](https://discord.com/channels/319857228905447436/480397772248580098).
+Principia](https://discord.gg/Hz8sJx7K8e).
 There are many knowledgeable users there who can help you with basic questions
 and provide guidance on getting started with the mod.  The Discord channel is
 *not* suitable for reporting bugs, however; a post like "when I do X it crashes"
@@ -89,4 +89,4 @@ not what you think the solution should be (that’s known as the
 [XY Problem](https://en.wikipedia.org/wiki/XY_problem)).  Most users are not in
 a position to evaluate the complexity of implementing a particular solution, so
 if you suggest a change that would be extremely onerous to implement, it’s
-likely to be rejected, even if a cheap change would solve 80% of the problem.
+likely to be rejected, even if a cheap change would solve 80% of the problem.