Update torch  brightness max level description. am: 2099c9d7bd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/19348258

Change-Id: Ia4ff013d849b8a7a69e98ce628ebba42da7800f6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>