bug#55334: Incorrect documentation of "string-to-number" function

[emacs]

As of commit [364e3d7] (2022-05-09), doc/lispref/strings.texi says
following about "string-to-number" function:
https://git.savannah.gnu.org/cgit/emacs.git/tree/doc/lispref/strings.texi#n851

        @defun string-to-number string &optional base
        @cindex string to number
        This function returns the numeric value of the characters in
        @var{string}.  If @var{base} is non-@code{nil}, it must be an integer
        between 2 and 16 (inclusive), and integers are converted in that base.
        If @var{base} is @code{nil}, then base ten is used.  Floating-point
        conversion only works in base ten; we have not implemented other
        radices for floating-point numbers, because that would be much more
        work and does not seem useful.

        If @var{string} looks like an integer but its value is too large
        to fit into a Lisp integer, @code{string-to-number} returns a
        floating-point result.

Last paragraph does not match behaviour I can observe on my emacs:

        (floatp (string-to-number (number-to-string (expt 2 800))))
        => nil
        (bignump (string-to-number (number-to-string (expt 2 800))))
        => t

I think this paragraph was written before advent of bignums, and
should be removed.

Configured using:
 'configure
 --prefix=/nix/store/svyam9iybwcl5g7wrll1sgwhilw33f9k-emacs-27.2
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Configured features:
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PDUMPER GMP

Important settings:
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Major mode: Lisp Interaction

Minor modes in effect:
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  line-number-mode: t
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Load-path shadows:
/home/kaction/devel/emacs/emacs-nix-environment/nix-environment hides 
/home/kaction/.emacs.d/elpa/nix-environment-1.0/nix-environment

Features:
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select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
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Memory information:
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 (string-bytes 1 5455638)
 (vectors 16 246978)
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 (buffers 1000 18))