freedesktop.org desktop entry: add zh_TW Comment translation

Signed-off-by: Ｖ字龍(Vdragon) <Vdragon.Taiwan@gmail.com>
Merge pull request #374 from Vdragon/desktop-entry-translation

freedesktop.org desktop entry: add zh_TW translation

Signed-off-by: David Aguilar <davvid@gmail.com>