am 62bd2319: am 38b6d7a1: Merge "docs: Updated In-app Billing docs to support subscriptions for V3." into jb-mr1-dev

# Via Android (Google) Code Review (1) and others
* commit '62bd23190bdf559c6297ddcc991d18449c2e9d48':
  docs: Updated In-app Billing docs to support subscriptions for V3.