[LyX/master] de/Additional: first part of revisions.

[Juergen Spitzmueller]

commit 9e45f570a74753dd2096347ceb46aeae02ec4f9f
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sat Jan 14 11:29:06 2023 +0100

    de/Additional: first part of revisions.

 lib/doc/de/Additional.lyx |20368 ++++++++++++++++++++++-----------------------
 1 files changed, 9752 insertions(+), 10616 deletions(-)