Open configuration section of KSirK manual instead of its index when pressing...

Open configuration section of KSirK manual instead of its index when pressing 'Help' in the config window

Summary: Now when you choose "Settings -> Configure KSirK..." then press "Help" button KHepCenter opens KSirK docs index instead of the corresponding section.

Test Plan: Start KSirK, choose "Settings -> Configure KSirK...", press "Help". Configuration section should be opened (KF > 5.51 needed)

Reviewers: #kde_games, mlaurent

Reviewed By: mlaurent

Subscribers: kde-games-devel

Differential Revision: https://phabricator.kde.org/D18225