[PATCH] README: Add Discord badge

[Stephen Finucane]

Add a Discord badge that can be used to connect to the server. Link
taken from daxtens' email to the list about the server [1].

[1] https://lists.ozlabs.org/pipermail/patchwork/2021-September/007226.html

Signed-off-by: Stephen Finucane <stephen at that.guru>
Cc: Daniel Axtens <dja at axtens.net>
---
 README.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git README.rst README.rst
index 7af45ce7..8d73ad78 100644
--- README.rst
+++ README.rst
@@ -18,6 +18,10 @@ Patchwork
    :target: http://patchwork.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status
 
+.. image:: https://img.shields.io/discord/591914197219016707.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2
+   :target: https://discord.gg/hGWjXVTAbB
+   :alt: Discord
+
 **Patchwork** is a patch tracking system for community-based projects. It is
 intended to make the patch management process easier for both the project's
 contributors and maintainers, leaving time for the more important (and more
-- 
2.31.1