Bug#665399: A comment in a config file refers to a non existent chapter in spec.txt

[Regid Ichira]

Package:  exim4-config
Version:  4.77-1
Severity: normal
File:     /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt

    $ grep -C2 39.31 /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
      # This feature does not work in smarthost and satellite setups as
      # with these setups all domains pass verification. See spec.txt chapter
      # 39.31 with the added information that a smarthost/satellite setup
      # routes all non-local e-mail to the smarthost.
      .ifdef CHECK_RCPT_VERIFY_SENDER

    $ zgrep 39.31 /usr/share/doc/exim4-base/spec.txt.gz
    $