Merge "Update documentation" into udc-dev am: 565611aaee am: cca8968478

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22121450

Change-Id: Idb76144a211131183339f4c02316bdbcdefbe5eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>