docs: update community Slack URL to point to Discourse invite thread (electron#18222)

danawoodman · nornagon · commit 4feb769378fe · 2019-06-03T12:06:06.000-07:00
diff --git a/docs/tutorial/support.md b/docs/tutorial/support.md
@@ -12,7 +12,7 @@ you can interact with the community in these locations:
 - [`electron`](https://discuss.atom.io/c/electron) category on the Atom
 forums
 - `#atom-shell` channel on Freenode
-- [`Electron`](https://atom-slack.herokuapp.com) channel on Atom's Slack
+- `#electron` channel on [Atom's Slack](https://discuss.atom.io/t/join-us-on-slack/16638?source_topic_id=25406)
 - [`electron-ru`](https://telegram.me/electron_ru) *(Russian)*
 - [`electron-br`](https://electron-br.slack.com) *(Brazilian Portuguese)*
 - [`electron-kr`](https://electron-kr.github.io/electron-kr) *(Korean)*
