Doc: Fix typo the right way. Supersedes cl/318172931 am: d5726423 am: 0e59503e am: 7887b816

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12828332

Change-Id: I5f44da14f3d028aaf7754d4309fdbda13c649ca3