[InterNetNews/inn] 65eca9: Improve documentation of the optimal history size

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 65eca94d56287daace08f533dcce95694f9ae407
      https://github.com/InterNetNews/inn/commit/65eca94d56287daace08f533dcce95694f9ae407
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-08-04 (Fri, 04 Aug 2023)

  Changed paths:
    M doc/pod/install.pod
    M doc/pod/libinn_dbz.pod
    M doc/pod/makedbz.pod

  Log Message:
  -----------
  Improve documentation of the optimal history size

Mention the use of "makedbz -s size" in INSTALL.

Explain what the size defaults to, and how makedbz uses the size of the
previous history file to rebuild a new one.