Update torch brightness max level description. am: 8dbfe053 am: 5e69d777

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



Change-Id: I384c2aeb150245359d29a89918997790292d86f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>