Fix up license URL
Fix up license URL

pacificIT/ModernHttpClient,leonardors/ModernHttpClient,tomgilder/OkHttpClient,scoodah/ModernHttpClient,tpurtell/ModernHttpClient,nachocove/ModernHttpClient,mattleibow/ModernHttpClient,paulcbetts/ModernHttpClient,kensykora/ModernHttpClient,djlewisxactware/ModernHttpClient,xamarin/ModernHttpClient,nachocove/ModernHttpClient-demo,tomgilder/OkHttpClient,koltsov-ps/ModernHttpClient