/usr/share/doc/ is in tdiary-contrib 5.0.8-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/tdiary-contrib/
/usr/share/doc/tdiary-contrib/README.Debian
/usr/share/doc/tdiary-contrib/changelog.Debian.gz
/usr/share/doc/tdiary-contrib/copyright
/usr/share/doc/tdiary-contrib/en/
/usr/share/doc/tdiary-contrib/en/filter/
/usr/share/doc/tdiary-contrib/en/filter/spambayes.txt
/usr/share/doc/tdiary-contrib/en/plugin.txt
/usr/share/doc/tdiary-contrib/en/style/
/usr/share/doc/tdiary-contrib/en/style/hatena.txt
/usr/share/doc/tdiary-contrib/en/style/markdown.txt
/usr/share/doc/tdiary-contrib/en/util.txt
/usr/share/doc/tdiary-contrib/ja/
/usr/share/doc/tdiary-contrib/ja/filter/
/usr/share/doc/tdiary-contrib/ja/filter/antirefspam.history.txt
/usr/share/doc/tdiary-contrib/ja/filter/antirefspam.txt
/usr/share/doc/tdiary-contrib/ja/filter/comment_key.ja.html
/usr/share/doc/tdiary-contrib/ja/filter/spambayes.txt
/usr/share/doc/tdiary-contrib/ja/plugin/
/usr/share/doc/tdiary-contrib/ja/plugin/add_bookmark.txt
/usr/share/doc/tdiary-contrib/ja/plugin/category_to_tag.txt
/usr/share/doc/tdiary-contrib/ja/plugin/cocoment.txt
/usr/share/doc/tdiary-contrib/ja/plugin/google_adsense.txt
/usr/share/doc/tdiary-contrib/ja/plugin/google_analytics.txt
/usr/share/doc/tdiary-contrib/ja/plugin/image_gps.txt
/usr/share/doc/tdiary-contrib/ja/plugin/livedoor_weather.txt
/usr/share/doc/tdiary-contrib/ja/plugin/opensearch_ad.txt
/usr/share/doc/tdiary-contrib/ja/plugin/playstore.txt
/usr/share/doc/tdiary-contrib/ja/plugin/section_footer.txt
/usr/share/doc/tdiary-contrib/ja/plugin/select_theme.txt
/usr/share/doc/tdiary-contrib/ja/plugin.txt
/usr/share/doc/tdiary-contrib/ja/style/
/usr/share/doc/tdiary-contrib/ja/style/hatena.txt
/usr/share/doc/tdiary-contrib/ja/style/markdown.txt
/usr/share/doc/tdiary-contrib/ja/util.txt