Fix type names casing

Summary: It's supposed to be uppercase, cmake was warning about it.

Test Plan: Now it builds as well, but cmake doesn't complain.

Reviewers: Frameworks, Android, vkrause

Reviewed By: Android, vkrause

Subscribers: kde-frameworks-devel, kde-buildsystem

Tags: Frameworks, Build System

Differential Revision: https://phabricator.kde.org/D22317