Update README.md

Author: Scitator

README.md

@@ -10,9 +10,9 @@
 [![Docs](https://img.shields.io/badge/dynamic/json.svg?label=docs&url=https%3A%2F%2Fpypi.org%2Fpypi%2Fcatalyst%2Fjson&query=%24.info.version&colorB=brightgreen&prefix=v)](https://catalyst-team.github.io/catalyst/index.html)
 [![PyPI Status](https://pepy.tech/badge/catalyst)](https://pepy.tech/project/catalyst)
 
-[![Twitter](https://img.shields.io/badge/news-on%20twitter-499feb)](https://twitter.com/catalyst_core)
-[![Telegram](https://img.shields.io/badge/channel-on%20telegram-blue)](https://t.me/catalyst_team)
-[![Slack](https://img.shields.io/badge/Catalyst-slack-success)](https://join.slack.com/t/catalyst-team-core/shared_invite/zt-d9miirnn-z86oKDzFMKlMG4fgFdZafw)
+[![Twitter](https://img.shields.io/badge/news-twitter-499feb)](https://twitter.com/CatalystTeam)
+[![Telegram](https://img.shields.io/badge/channel-telegram-blue)](https://t.me/catalyst_team)
+[![Slack](https://img.shields.io/badge/Catalyst-slack-success)](https://join.slack.com/t/catalyst-team-devs/shared_invite/zt-d9miirnn-z86oKDzFMKlMG4fgFdZafw)
 [![Github contributors](https://img.shields.io/github/contributors/catalyst-team/catalyst.svg?logo=github&logoColor=white)](https://github.com/catalyst-team/catalyst/graphs/contributors)
 
 </div>