Bug#352667: apt: apt_preferences(5) should document referring to sources by FQDN in an example

[Julian Gilbey <jdg@debian.org>]

Package: apt
Version: 0.6.43.2
Severity: minor

The apt_preferences(5) manpage says:

   o  The general form assigns a priority to all of the  package  versions
      in  a  given  distribution (that is, to all the versions of packages
      that are listed in a certain Release file) or to all of the  package
      versions  coming  from  a particular Internet site, as identified by
      the site's fully qualified domain name.

but does not give an example of how to refer to all versions from a
particular internet site, which is what I would like to do.

   Julian