Doc: Fix typo the right way. Supersedes cl/318172931 am: d5726423ca am: 0e59503e96 am: 18d9527af6

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

Change-Id: I0c629ac821d9bf2ee12313f6e41044c3bd07e278