Update slack join link

Author: davidzhao

README.md

@@ -236,10 +236,12 @@ If your app is targeting macOS Catalina, make sure to do the following to avoid
 
 # Getting help / Contributing
 
-Please join us on [Slack](https://join.slack.com/t/livekit-users/shared_invite/zt-rrdy5abr-5pZ1wW8pXEkiQxBzFiXPUg) to get help from our [devs](https://github.com/orgs/livekit/teams/devs/members) / community members. We welcome your contributions(PRs) and details can be discussed there.
+Please join us on [Slack](https://livekit.io/join-slack) to get help from our devs / community members. We welcome your contributions(PRs) and details can be discussed there.
 
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+
 <br/><table>
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 <thead><tr><th colspan="2">LiveKit Ecosystem</th></tr></thead>
 <tbody>
 <tr><td>Client SDKs</td><td><a href="https://github.com/livekit/components-js">Components</a> · <a href="https://github.com/livekit/client-sdk-js">JavaScript</a> · <b>iOS/macOS</b> · <a href="https://github.com/livekit/client-sdk-android">Android</a> · <a href="https://github.com/livekit/client-sdk-flutter">Flutter</a> · <a href="https://github.com/livekit/client-sdk-react-native">React Native</a> · <a href="https://github.com/livekit/client-sdk-rust">Rust</a> · <a href="https://github.com/livekit/client-sdk-python">Python</a> · <a href="https://github.com/livekit/client-sdk-unity-web">Unity (web)</a> · <a href="https://github.com/livekit/client-sdk-unity">Unity (beta)</a></td></tr><tr></tr>