docs: link to sdk manager
docs: link to sdk manager

Change-Id: I41f656e2eee1189298292e3bcca387de05e0e3c7

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