Update CHANGELOG.md

Author: Taaku18

CHANGELOG.md

@@ -33,6 +33,7 @@ In the future, the Modmail API (https://modmail.tk) will be deprecated. This is
 - A lot of painful code cleanup, which is good for us (the devs), but shouldn't affect you.
 - The appearance of the `logs` command. Should be clearer with better info now.
 - Bot owners get access to all commands regardless of server permissions.
+- Blocked users no longer receive a message, only the blocked emoji will be sent.
 
 ### Added