bug#43869: 28.0.50; reference to non existent variable in manual sect 23.3.3

[Eli Zaretskii]

> From: mvar <mvar.40k@gmail.com>
> Date: Thu, 8 Oct 2020 22:01:09 +0300
> 
> in section 23.3.3 "Defining Minor Modes" of the emacs manual
> 
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Defining-Minor-Modes.html#Defining-Minor-Modes
> 
> there's a reference to a variable "hungry-mode-map" that does not exist
> anywhere in the page & provided example.

That's because 'define-minor-mode' defines that map automatically.