/usr/share/gtk-doc/html/hkl-5/ is in libhkl-doc 5.0.0.2173-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/hkl-5/annotation-glossary.html
/usr/share/gtk-doc/html/hkl-5/api-index-full.html
/usr/share/gtk-doc/html/hkl-5/ch01.html
/usr/share/gtk-doc/html/hkl-5/deprecated-api-index.html
/usr/share/gtk-doc/html/hkl-5/hkl-5.devhelp2
/usr/share/gtk-doc/html/hkl-5/hkl-array-size.html
/usr/share/gtk-doc/html/hkl-5/hkl-autodata.html
/usr/share/gtk-doc/html/hkl-5/hkl-build-assert.html
/usr/share/gtk-doc/html/hkl-5/hkl-check-type.html
/usr/share/gtk-doc/html/hkl-5/hkl-compiler.html
/usr/share/gtk-doc/html/hkl-5/hkl-container-of.html
/usr/share/gtk-doc/html/hkl-5/hkl-darray.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-axis-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-detector-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-factory-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-geometry-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-interval-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-lattice-private.html
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/usr/share/gtk-doc/html/hkl-5/hkl-hkl-matrix-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-parameter-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-pseudoaxis-auto-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-pseudoaxis-common-eulerians-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-pseudoaxis-common-hkl-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-pseudoaxis-common-psi-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-pseudoaxis-common-q-private.html
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/usr/share/gtk-doc/html/hkl-5/hkl-hkl-quaternion-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-sample-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-source-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-type-builtins.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-types.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-unit-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl-vector-private.html
/usr/share/gtk-doc/html/hkl-5/hkl-hkl.html
/usr/share/gtk-doc/html/hkl-5/hkl-list.html
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/usr/share/gtk-doc/html/hkl-5/hkl-str-debug.html
/usr/share/gtk-doc/html/hkl-5/hkl-str.html
/usr/share/gtk-doc/html/hkl-5/home.png
/usr/share/gtk-doc/html/hkl-5/index.html
/usr/share/gtk-doc/html/hkl-5/left-insensitive.png
/usr/share/gtk-doc/html/hkl-5/left.png
/usr/share/gtk-doc/html/hkl-5/object-tree.html
/usr/share/gtk-doc/html/hkl-5/right-insensitive.png
/usr/share/gtk-doc/html/hkl-5/right.png
/usr/share/gtk-doc/html/hkl-5/style.css
/usr/share/gtk-doc/html/hkl-5/up-insensitive.png
/usr/share/gtk-doc/html/hkl-5/up.png