Not clear to newcomers that source link is not supported with Mono debugger

I'm new to source link. I've been working on a Xamarin.Forms project, and was attempting to debug nuget packages using source link. It wasn't working; spent quite some time trying to troubleshoot before finding the yellow box at the top of https://docs.microsoft.com/en-us/xamarin/xamarin-forms/internals/sourcelink

> Visual Studio 2019 supports Source Link for the .NET debugger but does not currently support Source Link for the Mono debugger. Therefore, you can use Source Link to debug UWP apps, but not Android or iOS app.

It would be useful to include this information in the sourcelink readme to hopefully save folks some time.

Additionally; enhancement? Add support for mono debugger.