[tracker] website: Riot.im is now Element.io

[Sam Thursfield <sthursfield src gnome org>]

commit 1ace1e2958b9b214e28a9779bfc27adf93ddb9af
Author: Sam Thursfield <sam afuera me uk>
Date:   Mon Aug 10 10:38:56 2020 +0200

    website: Riot.im is now Element.io

 docs/website/community.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/docs/website/community.md b/docs/website/community.md
index 18d4f94f7..82689acf9 100644
--- a/docs/website/community.md
+++ b/docs/website/community.md
@@ -13,7 +13,7 @@ posts.
 
 Real time discussion can be found in the #tracker channel on the GIMPnet IRC
 network, also bridged to the Matrix channel #tracker:gnome.org.
-[Click here to join the conversation in your browser](https://riot.im/app/#/room/#tracker:gnome.org)
-using the Riot.im webapp.
+[Click here to join the conversation in your browser](https://app.element.io/#/room/#tracker:gnome.org)
+using the Element webapp.
 
 There is also a [Tracker project wiki](https://wiki.gnome.org/Projects/Tracker).