/usr/share/doc/ubuntu-packaging-guide-html-es/singlehtml/_static/comment-bright.png is in ubuntu-packaging-guide-html-es 0.3.8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ubuntu-packaging-guide-html-es/singlehtml/_static/../../../../ubuntu-packaging-guide/_static/comment-bright.png