The session is not called KDE
Summary: Kill wrong lingo in autostart kcm, make it more generic
Test Plan: Checked in autostart KCM, new string appears
Reviewers: Plasma, davidedmundson
Reviewed By: Plasma, davidedmundson
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D6137