/usr/share/doc/lttoolbox-dev/changelog.Debian.gz is in lttoolbox-dev 3.3.3~r68466-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/lttoolbox-dev/../liblttoolbox3-3.3-0v5/changelog.Debian.gz