Updated the change log.

Author: Edward Smith

ChangeLog.md

@@ -1,7 +1,7 @@
 Branch iOS SDK Change Log
 
 - v0.21.12
-  * Fixed a crash bug in TestBed-Swift due to a renamed storyboard.
+  * Fixed a crash bug in TestBed-Swift due to a renamed storyboard (AIS-430).
 
 - v0.21.11
   * Fix CoreSpotlight defines for old iOS version support.