docs: Fixed url pointing to Google Play Services 5.0  blog post.
docs: Fixed url pointing to Google Play Services 5.0  blog post.

Change-Id: I7bf6a450546b03c23171db0047866560983f88d0

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