Merge "[DOC UPDATE] Refine extension strength default" into udc-dev am: 79e749d4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24344720



Change-Id: I99473062343b4d325bba288b8647b73a5fafb281
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>