Qt Linguist: Fix help URL.
Qt Linguist: Fix help URL.

Task-number: QTBUG-28373

Change-Id: I1c5929ffee32843867d2401a23386545f36b9bcc
Reviewed-by: hjk <6fac1c92f5b9c7890a04d7f8a9d8912d16355eac@ovi.com>
Reviewed-by: Jerome Pasion <c10995d24f6b454503389e8d00d837aef038985d@digia.com>

mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools