[InterNetNews/inn] 4ae6d7: pullnews: Improve documentation about -R

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 4ae6d700e75efba553e5c34fcae24aef627d6552
      https://github.com/InterNetNews/inn/commit/4ae6d700e75efba553e5c34fcae24aef627d6552
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-04-16 (Sun, 16 Apr 2023)

  Changed paths:
    M doc/pod/pullnews.pod
    M frontends/pullnews.in

  Log Message:
  -----------
  pullnews: Improve documentation about -R

Using this flag (reader mode to inject articles) is not recommended, and leads to some article rejections.

433 is a port for feeding.