Merge "docs: Clarified structure of security config file." into mnc-mr-docs am: c3cada0
am: 0e6f90e

* commit '0e6f90e46150f04d86936f761202a7b689cbb2a7':
  docs: Clarified structure of security config file.

Change-Id: I7a3b632ec88aff8124afa5f79b58d35bd12a8433