[ticket/10549] changed "right" to "incorrect"

PHPBB3-10549
[ticket/10549] using correct variable in includes/functions_module.php too

PHPBB3-10549
Merge remote-tracking branch 'Crizz0/ticket/10549' into develop-olympus

* Crizz0/ticket/10549:
  [ticket/10549] using correct variable in includes/functions_module.php too
  [ticket/10549] changed "right" to "incorrect"