[InterNetNews/inn] ff1990: Document to avoid bumping SONAME in minor releases

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: ff1990cc458961589935e60f2c23e3499875da8d
      https://github.com/InterNetNews/inn/commit/ff1990cc458961589935e60f2c23e3499875da8d
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-12-24 (Sun, 24 Dec 2023)

  Changed paths:
    M doc/pod/hacking.pod

  Log Message:
  -----------
  Document to avoid bumping SONAME in minor releases

A request from the Fedora maintainer of the inn package (Dominik
Mierzejewski).