l10n: de.po: translate one message
l10n: de.po: translate one message

Translate one message came from git.pot update in 6eebb35
(l10n: git.pot: v2.4.0 round 2 (1 update)).

Signed-off-by: Ralf Thielow <d790fea1760bfa57e221e3da971e544c5c4e0598@gmail.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git