/usr/share/doc/ is in libdiscover-dev 2.1.2-8.
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/usr/share/doc/discover/
/usr/share/doc/discover/api-reference/
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/usr/share/doc/libdiscover-dev/
/usr/share/doc/libdiscover-dev/copyright
/usr/share/doc/libdiscover-dev/changelog.Debian.gz