Replace references to mailinglists with @lists.postgresql.org

Magnus Hagander <magnus@hagander.net>

Commit: c0d0e540847d24d9dfe374549fb4cfd5ca40d050
Author: Magnus Hagander <magnus@hagander.net>
Date: 2019-01-17T12:42:40Z
Releases: 12.0
Replace references to mailinglists with @lists.postgresql.org

The namespace for all lists have changed a while ago, so all references
should use the correct address.

Files

Documentation touched