Documentation on vterm-mode-map

[wlmb]

The docucmentation (README.md) suggests under the heading Keybindings adding the line
(define-key vterm-mode-map (kbd "C-q") #'vterm-send-next-key)
to send a key that is recognize by emacs. I tried that in my .emacs file, but I got the error
Symbol's value as variable is void: vterm-mode-map
upon initialization. I found I could write
(with-eval-after-load 'vterm
(define-key vterm-mode-map (kbd "C-q") #'vterm-send-next-key))
in my .emacs and then the error would be gone. I suggest modifying the documentation accordingly.
Regards and thanks,