message: Update chat link
  The discord channel has been archived and is no longer public.
diff: {%- set governance_link = "https://www.rust-lang.org/governance/teams/dev-tools#docs-rs" -%}
  <p>
  Docs.rs is run and maintained by the <a href="{{ governance_link | safe }}">Docs.rs team</a>.
  - You can find us in #docs-rs on <a href="https://discord.gg/f7mTXPW">Discord</a>.
  + You can find us in #t-docs-rs on <a href="https://rust-lang.zulipchat.com/#narrow/stream/356853-t-docs-rs">Zulip</a>.
  </p>
  </div>
  