Man pages matching name excel::writer::xlsx::chart::doughnut in section 3pm:

Excel::Writer::XLSX::Chart::Doughnut.3pm.en	debian 10 / libexcel-writer-xlsx-perl
Excel::Writer::XLSX::Chart::Doughnut.3pm.en	debian 11 / libexcel-writer-xlsx-perl
Excel::Writer::XLSX::Chart::Doughnut.3pm.en	debian 12 / libexcel-writer-xlsx-perl