Merge "docs: Explanation on "profile owner on the primary user"" into tm-dev am: de6b490d72 am: 2d0e68d362 am: 3df235fae6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20403491

Change-Id: I3b761989972d9cb15234787d98c683c0b6abc7b1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>