Update de.json

Created by: Tirokk

Authored by erhardtstiefel Jan 1, 2020 Merged Jan 7, 2020

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🍰 Pullrequest

"Sprache" will be changed to "Sprache deines Beitrags"

Issues

• This change has to be done also for the other languages. I'll try to do so by adding more commits to this PR