/usr/share/doc/puredata/changelog.Debian.gz is in puredata 0.48.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/puredata/../puredata-core/changelog.Debian.gz
/usr/share/doc/puredata/../puredata-core/changelog.Debian.gz