D14686: API docs: fix *xi18n* calls in example code to use correct variants

[Chusslove Illich]

ilic accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R249 KI18n

BRANCH
  fixxi18ncallexamples

REVISION DETAIL
  https://phabricator.kde.org/D14686

To: kossebau, ilic
Cc: kde-frameworks-devel, michaelh, ngraham, bruns