Update ChangeLog.md

Author: vladimir-shcherbakov

src/Accounts/Accounts/ChangeLog.md

@@ -21,7 +21,7 @@
 
 ## Version 1.2.1
 * Release with correct version of Authentication
-* Short-term fix for the issue #7876
+* Enable MSI Authentication in Azure Functions and WebApps
 
 ## Version 1.2.0
 * Add interactive and username/password authentication for Windows PowerShell 5.1 only