emacs-26 07ea5ef99a: Fix reference style in org.texi

[Kyle Meyer]

> * doc/misc/org.texi (A Texinfo example): Fix reference style.
[...]
> -Here is a more detailed example Org file.  @xref{GNU Sample
> +Here is a more detailed example Org file.  See @ref{GNU Sample
>  Texts,,,texinfo,GNU Texinfo Manual} for an equivalent example using Texinfo
>  code.

I'm reviewing this commit for backport to the Org repo, and I don't
understand what it's fixing.  Both variants seem to produce the
equivalent output.  Could you please explain to me what the difference
is?

Thanks.

-- 
Kyle