docs: Fixed broken link in 'Displaying a Now Playing Card' lesson. bug: 19555868
docs: Fixed broken link in 'Displaying a Now Playing Card' lesson.
bug: 19555868

Change-Id: I0063c5a71e471b13dbe8e06054cbdc7dd8884b46

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base