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

* commit 'c3cada0ae54e93137a34731802f6fcc1413d6e6c':
  docs: Clarified structure of security config file.

Change-Id: Iae9f64995c9d2fb90ad0e37cff949f03f75cc999