/usr/share/doc/tdiary-plugin/changelog.Debian.gz is in tdiary-plugin 3.2.2-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/tdiary-plugin/../tdiary/changelog.Debian.gz
/usr/share/doc/tdiary-plugin/../tdiary/changelog.Debian.gz