[LyX/master] Russian translation of the User Guide, by Henry Chern

[Juergen Spitzmueller]

commit 330628a685ea2470fae4a64a61e6b1b7c8fb2b10
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue May 26 12:39:23 2020 +0200

    Russian translation of the User Guide, by Henry Chern

 lib/doc/Makefile.am      |    3 +-
 lib/doc/ru/UserGuide.lyx |48396 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48398 insertions(+), 1 deletions(-)