docs: Update instructions to download samples in Android Studio.
docs: Update instructions to download samples in Android Studio.

bug: 21425873
Change-Id: I0e5710c08f7fbe5f92ca16b366ea14a1b05d491a

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