README.md in actioncable-6.0.2.2 vs README.md in actioncable-6.0.3.rc1

@@ -19,6 +19,6 @@
 
 * https://github.com/rails/rails/issues
 
 Feature requests should be discussed on the rails-core mailing list here:
 
-* https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core
+* https://discuss.rubyonrails.org/c/rubyonrails-core