Merge "Document whether dist API files include updatable or not" into main am: 996abf256e am: 7805aa540d

Original change: https://android-review.googlesource.com/c/platform/development/+/3072622

Change-Id: I8ddef9560794c38af3916b301475f3320b609012
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>