gnucash-docs stable: L10n:de: Update both titlepages to C

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/6e5adeef (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/52e15369 (commit)



commit 6e5adeefe8c86302f0f6222440d6f14875b49544
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Thu Jul 27 01:13:50 2023 +0200

    L10n:de: Update both titlepages to C



Summary of changes:
 de/guide/index.docbook  | 190 ++++++++++++++++++++++++------------------------
 de/manual/index.docbook | 116 ++++++++++++++---------------
 2 files changed, 156 insertions(+), 150 deletions(-)