[LyX/master] Some corrections to the Russian User Guide, by Yuriy

[Juergen Spitzmueller]

commit 91cf97b1983b47373a2b120929ae2f1fe5271cc7
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Wed Jun 3 12:05:42 2020 +0200

    Some corrections to the Russian User Guide, by Yuriy

 lib/doc/ru/UserGuide.lyx |  729 +++++++++++++++++++++++-----------------------
 1 files changed, 362 insertions(+), 367 deletions(-)