SDL: docs: README.md points to Discourse instead of the mailing list now

From c4b7e485afa09117036e72f89e0e66e6b66f038d Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 18 Feb 2021 11:09:52 -0500
Subject: [PATCH] docs: README.md points to Discourse instead of the mailing
 list now.

---
 docs/README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/README.md b/docs/README.md
index 30277437e..e44d7cf66 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -51,7 +51,8 @@ More documentation and FAQs are available online at [the wiki](https://github.co
 - [WinRT](README-winrt.md)
 
 If you need help with the library, or just want to discuss SDL related
-issues, you can join the [developers mailing list](http://www.libsdl.org/mailing-list.php)
+issues, you can join the [SDL Discourse](https://discourse.libsdl.org/),
+which can be used as a web forum or a mailing list, at your preference.
 
 If you want to report bugs or contribute patches, please submit them to
 [our bug tracker](https://github.com/libsdl-org/SDL/issues)