Merge "showmap: document in help memory is in KB" into main am: f6cbeaf95d am: bd8aa6e1d7 am: f50a5d16b0 am: 7690f80e77 am: dcc4b34766

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/2786444

Change-Id: If51e5972f40f57db1c45bbf9101c8b9ccc089de6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>