Update profiling API status (#15659)

* Update profiling API status

* Fix wording for ARM ReJIT issue

Author: sywhang

Documentation/project-docs/profiling-api-status.md

@@ -4,7 +4,9 @@ The .NET Core project started with the codebase from the desktop CoreCLR/Silverl
 
 ## Platform test coverage
 
-Windows and Linux x86/x64 have been covered. Arm32 is in progress at this time, OSX coming soon (please let us know if you have a pressing issue)
+- Windows on x86/x64/arm32
+- Linux on x86/x64/arm32
+- OSX 
 
 ## Known issues
 
@@ -16,6 +18,10 @@ The implementation of this API was making some questionable assumptions about Wi
 
 See github issue [#13153](https://github.com/dotnet/coreclr/issues/13153) for more details.
 
+### ReJIT on ARM
+
+ReJIT feature is only available on x86/x64 for now. 
+
 ### Any issues we missed?
 
 Please let us know and we will get it addressed. Thanks!