Merge "lint: update documentation on how to update the baseline" into main am: bc9d6797ec

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2815153

Change-Id: I0ae0d5c191c0c2b0cd42ee996cb02a084c62d068
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>