[ticket/11603] Fix usage note

PHPBB3-11603
[ticket/11603] Fix out dated comment

PHPBB3-11603
Merge remote-tracking branch 'nickvergessen/ticket/11603' into develop-olympus

* nickvergessen/ticket/11603:
  [ticket/11603] Fix out dated comment
  [ticket/11603] Fix usage note
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/11603] Fix out dated comment
  [ticket/11603] Fix usage note