I understood about @ref, @xref, etc.
So I fixed all those wrongly translated strings and uploaded to TP.

ср, 8 квіт. 2020 о 02:40 Julien Lepiller <julien@lepiller.eu> пише:

> Le 7 avril 2020 16:17:49 GMT-04:00, "Ludovic Courtès" <ludo@gnu.org> a
> écrit :
> >Hi,
> >
> >Pavlo Marianov <acid@jack.kiev.ua> skribis:
> >
> >>> doc/contributing.ru.texi:365: @url missing closing brace
> >
> >This one is:
> >
> >  CI-системой @url{@value{SUBSTITUTE-SERVER}.
> >                                           ^
> >Julien, do we need to do anything for the non-existent node names or is
> >there “something” that’ll take care of it?  (Somehow I can never
> >remember how that works.)
> >
> >Ludo’.
>
> You translate the menu and @node. You don't need to translate references
> like @ref, @xref or @pxref. The xref_command takes care of that (guix self)
> uses its own parser too. For references outside the guix manual, I use the
> English name too because they were not translated. It's ok to translate
> URLs to point to translated resources.
>