Merge "Improve am --help wording" into main am: 3b84c2ca31 am: 99f57d201a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2787105

Change-Id: I8be08ed07362d6f5bb7c69b3c1b7f663ef93a7e6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>