/usr/share/man/man3/hwloc_get_next_child.3.gz is in libhwloc-doc 1.3.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/hwlocality_helper_traversal_basic.3.gz
/usr/share/man/man3/hwlocality_helper_traversal_basic.3.gz