Javadoc Import & Nested Types

[jonpryor]

When importing Javadoc, and creating the "reference" URLs, we need to replace $ in type names with ..

For example, consider this Xamarin.Android documentation link: https://docs.microsoft.com/en-us/dotnet/api/android.accessibilityservices.accessibilitybuttoncontroller.accessibilitybuttoncallback?view=xamarin-android-sdk-12

The Android platform documentation link refers to: https://developer.android.com/reference/android/accessibilityservice/AccessibilityButtonController$AccessibilityButtonCallback

which is an HTTP-404.

It needs to instead reference https://developer.android.com/reference/android/accessibilityservice/AccessibilityButtonController.AccessibilityButtonCallback

When emitting URLs for the "Android" format, $ should always be replaced with ..