Update CODE_OF_CONDUCT.md

Author: hadifawaz1999

CODE_OF_CONDUCT.md

@@ -32,7 +32,7 @@ Thank you for helping make this a welcoming, friendly community for all.
 
 If you feel that the Code of Conduct has been violated, feel free to Contact a member of
 the `aeon` [Code of Conduct Moderators](https://www.aeon-toolkit.org/en/stable/about.html#code-of-conduct-moderators)
-directly on [Slack](https://join.slack.com/t/aeon-toolkit/shared_invite/zt-3ihx5vif8-SwFzy1unNNMeQueC84MXVA)
+directly on [Discord](https://discord.gg/W4PrQ4Dm7)
 or through the general `aeon` email ([contact@aeon-toolkit.org](mailto:contact@aeon-toolkit.org)).
 
 OR