[Tails-l10n] (review)[de] wiki/src/getting_started.de.po

Hi,
I improved the wording and removed a superfluous whitespace in the
"Getting started" page.

Please review:
https://gitlab.com/spriver/tails.git
branch: de_getting_started
HEAD commit: ffb994ad29 Improved wording, removed superfluous whitespace

Affected files:
wiki/src/getting_started.de.po


Cheers!
spriver