am 1c88f605: Merge branch \'lmp-mr1-ub-dev\' of...

am 1c88f605: Merge branch \'lmp-mr1-ub-dev\' of https://googleplex-android.googlesource.com/_direct/platform/frameworks/base into lmp-mr1-ub-dev

* commit '1c88f605':
  docs: change intro and title for contacts and sign-in lesson, and remove empty bullet