chore(#181): mention the GitHub discussion forum

SUPPORT.md

@@ -5,8 +5,11 @@ We choose not to use GitHub issues for general usage questions and support, pref
 
 If you are reporting a bug, please help to speed up problem diagnosis by providing as much information as possible. Ideally, that would include a small sample project that reproduces the problem.
 
+## GitHub discussions
+If you have a question or want to discuss specific things related to the library, you can use [discussion forum](https://github.com/ingogriebsch/spring-hateoas-siren/discussions). Please do not report a bug through this forum, but use the GitHub issues instead.
+
 ## Stack Overflow
 The Spring HATEOAS Siren community monitors the [spring-hateoas-siren](https://stackoverflow.com/tags/spring-hateoas-siren) tag on Stack Overflow. Before asking a question, please familiarize yourself with Stack Overflow's [advice on how to ask a good question](https://stackoverflow.com/help/how-to-ask).
 
 ## Gitter
-If you want to discuss something or have a question that isn't suited to Stack Overflow, the Spring Boot community chat in the [#spring-hateoas-siren room on Gitter](https://gitter.im/ingogriebsch/spring-hateoas-siren).
+If you want to discuss something or have a question that isn't suited to Stack Overflow, the Spring HATEOAS Siren community chat in the [#spring-hateoas-siren room on Gitter](https://gitter.im/ingogriebsch/spring-hateoas-siren).