dead symlink to readme

[Caspar Clemens Mierau]

Ubuntu version:

Description: Ubuntu 18.04.3 LTS
Release: 18.04

Package version:

carbon-c-relay:
  Installed: 3.2-1build1
  Candidate: 3.2-1build1
  Version table:
 *** 3.2-1build1 500
        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status

The README.md in /usr/share/doc/carbon-c-relay is a dead symlink to a not shipped carbon-c-relay.md.

root@8518d5105b36:/# less /usr/share/doc/carbon-c-relay/README.md
/usr/share/doc/carbon-c-relay/README.md: No such file or directory
root@8518d5105b36:/# cat /usr/share/doc/carbon-c-relay/README.md
cat: /usr/share/doc/carbon-c-relay/README.md: No such file or directory
root@8518d5105b36:/# ll /usr/share/doc/carbon-c-relay/README.md
lrwxrwxrwx 1 root root 17 Feb 5 2018 /usr/share/doc/carbon-c-relay/README.md -> carbon-c-relay.md

Documented in Debian upstream here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857518