Man pages matching name unicode::collate::cjk::jisx0208 in section 3perl:

Unicode::Collate::CJK::JISX0208.3perl.en	debian 10 / perl-doc
Unicode::Collate::CJK::JISX0208.3perl.en	debian 11 / perl-doc
Unicode::Collate::CJK::JISX0208.3perl.en	debian 12 / perl-doc