/usr/share/doc/kde/HTML/en_GB/knotes/common is in knotes 4:4.4.11.1+l10n-3+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/kde/HTML/en_GB/knotes/../common
/usr/share/doc/kde/HTML/en_GB/knotes/../common