[InterNetNews/inn] de4cda: scanspool: Explain what it a low article number

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: de4cda8450adf5fc1417d6598dc64e98cd778fe7
      https://github.com/InterNetNews/inn/commit/de4cda8450adf5fc1417d6598dc64e98cd778fe7
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-12-24 (Sun, 24 Dec 2023)

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

  Log Message:
  -----------
  scanspool: Explain what it a low article number

see #288