/usr/share/doc/liblognorm-dev/html/_static/searchtools.js is in liblognorm-dev 1.1.2-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/liblognorm-dev/html/_static/../../../../javascript/sphinxdoc/1.0/searchtools.js