Man pages matching name hwlocality_helper_nodeset_convert in section 3:

hwlocality_helper_nodeset_convert.3.en	debian 10 / libhwloc-doc
hwlocality_helper_nodeset_convert.3.en	debian 11 / libhwloc-doc
hwlocality_helper_nodeset_convert.3.en	debian 12 / libhwloc-doc