Updated changelog to address reviewer feedback

Author: vallerieknight-unity

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -12,7 +12,8 @@ however, it has to be formatted properly to pass verification tests.
 
 ### Fixed
 - Fixed an issue where using Pen devices on Android tablets would result in double clicks for UI interactions. [ISXB-1456](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1456)
-- Fixed `buttonSouth` returning the state of the east button (and so on for all the buttons) when using a Nintendo Switch Pro Controller on iOS [ISXB-1632](issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1632)
+- Fixed `buttonSouth` returning the state of the east button (and so on for all the compass named buttons) when using a Nintendo Switch Pro Controller on iOS [ISXB-1632](issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1632)
+- Fixed `aButton` returning the state of the east button (and so on for all the letter named buttons) when using a Nintendo Switch Pro Controller on Standalone & iOS [ISXB-1632](issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1632)