am 2bbaf754: am 80235ca7: am 6c9d6373: am f216ded9: Merge "docs: clarify usage for adb am component option" into jb-mr1-dev

# Via Android Git Automerger (3) and others
* commit '2bbaf754745a6a31fdc8e2ed5eb90d5790f198e9':
  docs: clarify usage for adb am component option