This PR adds our matrix space to the support options and alphabetizes
the list.
I also considered adding our Mastodon, however that isn't as suitable as
the other options because it's just whoever has access to the account vs
a community chat/forum.
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Signed-off-by: jolheiser <john.olheiser@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>
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