[LyX/master] Update the format for some doc pages

[Thibaut Cuvelier]

commit 7a6024381cc30e7496251d3620ce2aa3874b1597
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Sun Nov 20 15:20:53 2022 +0100

    Update the format for some doc pages

 lib/doc/de/Additional.lyx |   84 ++++++-
 lib/doc/es/Math.lyx       |  597 +++++++++++++++++++++++++++++++++++++++++++-
 lib/doc/ja/Math.lyx       |  609 ++++++++++++++++++++++++++++++++++++++++++++-
 lib/doc/ru/Math.lyx       |  581 ++++++++++++++++++++++++++++++++++++++++++-
 4 files changed, 1843 insertions(+), 28 deletions(-)