D9346: update german translation

[Jan Neumann]

jneumann added a reviewer: lueck.

REPOSITORY
  R878 Latte Dock

REVISION DETAIL
  https://phabricator.kde.org/D9346

To: jneumann, lueck
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart