/usr/share/doc/debian-policy/policy.html/ is in debian-policy 3.9.3.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/debian-policy/policy.html/ap-pkg-alternatives.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-binarypkg.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-conffiles.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-controlfields.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-diversions.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-scope.html
/usr/share/doc/debian-policy/policy.html/ap-pkg-sourcepkg.html
/usr/share/doc/debian-policy/policy.html/ch-archive.html
/usr/share/doc/debian-policy/policy.html/ch-binary.html
/usr/share/doc/debian-policy/policy.html/ch-controlfields.html
/usr/share/doc/debian-policy/policy.html/ch-customized-programs.html
/usr/share/doc/debian-policy/policy.html/ch-docs.html
/usr/share/doc/debian-policy/policy.html/ch-files.html
/usr/share/doc/debian-policy/policy.html/ch-maintainerscripts.html
/usr/share/doc/debian-policy/policy.html/ch-opersys.html
/usr/share/doc/debian-policy/policy.html/ch-relationships.html
/usr/share/doc/debian-policy/policy.html/ch-scope.html
/usr/share/doc/debian-policy/policy.html/ch-sharedlibs.html
/usr/share/doc/debian-policy/policy.html/ch-source.html
/usr/share/doc/debian-policy/policy.html/footnotes.html
/usr/share/doc/debian-policy/policy.html/index.html
/usr/share/doc/debian-policy/policy.html/upgrading-checklist.html