/usr/share/doc/libtelepathy-farstream-dev/changelog.Debian.gz is in libtelepathy-farstream-dev 0.6.2-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libtelepathy-farstream-dev/../libtelepathy-farstream3/changelog.Debian.gz