The content of the Category page is taken directly from the pages involved. The fact that they are mostly in English is probably because Qiii2006 translated them before we had localised categories. Try this. Go to one of those pages and change the Category statement on the translated page. You should see the Chinese version appear on the Category page.
what I gave you is the Chinese version... You may also want to check ukrainian version.
It's all about the title in the title bar. The heading in the page is not consistent/the_same to the titlebar. So the title showed in the category page is what shows in the title bar rather than the heading in the page content.
KDE UserBase Wiki 