/usr/share/help/vi/ is in mate-control-center-common 1.16.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/help/vi/mate-control-center/
/usr/share/help/vi/mate-control-center/config-accessibility-keyboard.xml
/usr/share/help/vi/mate-control-center/config-background.xml
/usr/share/help/vi/mate-control-center/config-behavior.xml
/usr/share/help/vi/mate-control-center/config-cds.xml
/usr/share/help/vi/mate-control-center/config-default-apps.xml
/usr/share/help/vi/mate-control-center/config-file-type.xml
/usr/share/help/vi/mate-control-center/config-hints.xml
/usr/share/help/vi/mate-control-center/config-html.xml
/usr/share/help/vi/mate-control-center/config-kbd.xml
/usr/share/help/vi/mate-control-center/config-keybindings.xml
/usr/share/help/vi/mate-control-center/config-mouse.xml
/usr/share/help/vi/mate-control-center/config-screensaver.xml
/usr/share/help/vi/mate-control-center/config-themes.xml
/usr/share/help/vi/mate-control-center/index.docbook