Polish change log

Author: msJinLei

src/Accounts/Accounts/ChangeLog.md

@@ -19,7 +19,7 @@
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 ## Upcoming Release
-* Fixed that removeUser didn't work when create Public Client with broker.
+* Fixed the issue that context is not cleared when WAM is enabled.
 
 ## Version 5.0.0
 * Changed the default output access token of `Get-AzAccessToken` from plain text to `SecureString`.