Update CHANGELOG.md

Author: danney-chun

CHANGELOG.md

@@ -19,8 +19,9 @@ SDK now supports `MessageForm`! Form message can only be sent through AI Chatbot
 - Deprecated `sb.feedChannel.getTotalUnreadMessageCount()`
 - Fixed timing issue with `BackGroundSync` completion confirmation
 - Fixed a bug that `userIdsFilter` and `searchFilter` don't work in MessageCollection
-- (internal) Added `ThrottleController` in `MessageCollection`## v4.12.10 (Jun 28, 2024)
+- (internal) Added `ThrottleController` in `MessageCollection`
 
+## v4.12.10 (Jun 28, 2024)
 ### **Improvements**
 - Fixed a bug that `connect()` fails if a session key is expired