Update torch brightness max level description. am: 8dbfe053

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/19386357



Change-Id: Ic557207e0eca939f8bfb786b3ab62e3d902d017d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>