/usr/share/doc/openvanilla-imgeneric-data-zh-tw/changelog.Debian.gz is in openvanilla-imgeneric-data-zh-tw 0.9.0a1.3+dfsg1-2.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/openvanilla-imgeneric-data-zh-tw/../openvanilla-imgeneric/changelog.Debian.gz