/usr/share/doc/libktoblzcheck1-dev/README.gz is in libktoblzcheck1-dev 1.37-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libktoblzcheck1-dev/../libktoblzcheck1c2a/README.gz
/usr/share/doc/libktoblzcheck1-dev/../libktoblzcheck1c2a/README.gz