/usr/share/doc/libcollada-dom2.4-dp-dev/changelog.Debian.gz is in libcollada-dom2.4-dp-dev 2.4.4+ds1-2build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libcollada-dom2.4-dp-dev/../libcollada-dom2.4-dp0/changelog.Debian.gz