[InterNetNews/inn] 868d0b: expire.ctl: Change default expire from 15 to 90 days

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 868d0b28bd018b1b5d0129d3815fbec48bf4d4b3
      https://github.com/InterNetNews/inn/commit/868d0b28bd018b1b5d0129d3815fbec48bf4d4b3
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2022-01-25 (Tue, 25 Jan 2022)

  Changed paths:
    M doc/pod/checklist.pod
    M doc/pod/install.pod
    M samples/expire.ctl

  Log Message:
  -----------
  expire.ctl: Change default expire from 15 to 90 days

It will certainly be more appropriate than 15 days as default value,
which is very short.