/usr/share/doc/ is in libnacore-doc 0.5.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libnacore-dev/
/usr/share/doc/libnacore-dev/html/
/usr/share/doc/libnacore-dev/html/search/
/usr/share/doc/libnacore-dev/html/search/GeneralU.html
/usr/share/doc/libnacore-dev/html/search/GeneralD.html
/usr/share/doc/libnacore-dev/html/search/NoResults.html
/usr/share/doc/libnacore-dev/html/search/VariablesN.html
/usr/share/doc/libnacore-dev/html/search/GeneralE.html
/usr/share/doc/libnacore-dev/html/search/GeneralS.html
/usr/share/doc/libnacore-dev/html/search/TypesN.html
/usr/share/doc/libnacore-dev/html/search/GeneralG.html
/usr/share/doc/libnacore-dev/html/search/GeneralA.html
/usr/share/doc/libnacore-dev/html/search/GeneralM.html
/usr/share/doc/libnacore-dev/html/search/GeneralT.html
/usr/share/doc/libnacore-dev/html/search/GeneralL.html
/usr/share/doc/libnacore-dev/html/search/GeneralC.html
/usr/share/doc/libnacore-dev/html/search/MacrosN.html
/usr/share/doc/libnacore-dev/html/search/ConstantsN.html
/usr/share/doc/libnacore-dev/html/search/GeneralV.html
/usr/share/doc/libnacore-dev/html/search/FunctionsN.html
/usr/share/doc/libnacore-dev/html/search/GeneralN.html
/usr/share/doc/libnacore-dev/html/search/GeneralF.html
/usr/share/doc/libnacore-dev/html/javascript/
/usr/share/doc/libnacore-dev/html/javascript/searchdata.js
/usr/share/doc/libnacore-dev/html/javascript/main.js
/usr/share/doc/libnacore-dev/html/javascript/prettify.js
/usr/share/doc/libnacore-dev/html/styles/
/usr/share/doc/libnacore-dev/html/styles/main.css
/usr/share/doc/libnacore-dev/html/files/
/usr/share/doc/libnacore-dev/html/files/NASPRO/
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/locale-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/lib-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/env-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/string-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/dl-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/cc-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/thread-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/types-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/fs-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/msg-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/list-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/sem-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/avl-h.html
/usr/share/doc/libnacore-dev/html/files/NASPRO/core/mutex-h.html
/usr/share/doc/libnacore-dev/html/index.html
/usr/share/doc/libnacore-dev/html/index/
/usr/share/doc/libnacore-dev/html/index/General3.html
/usr/share/doc/libnacore-dev/html/index/General2.html
/usr/share/doc/libnacore-dev/html/index/Constants.html
/usr/share/doc/libnacore-dev/html/index/General.html
/usr/share/doc/libnacore-dev/html/index/Functions.html
/usr/share/doc/libnacore-dev/html/index/Types.html
/usr/share/doc/libnacore-dev/html/index/Variables.html
/usr/share/doc/libnacore-dev/html/index/Macros.html
/usr/share/doc/libnacore-doc/
/usr/share/doc/libnacore-doc/copyright
/usr/share/doc/libnacore-doc/changelog.Debian.gz