/usr/share/man/man3/ is in libedit-dev 3.1-20160903-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/man/man3/el_end.3.gz
/usr/share/man/man3/editline.3edit.gz
/usr/share/man/man3/el_deletestr.3.gz
/usr/share/man/man3/el_get.3.gz
/usr/share/man/man3/el_getc.3.gz
/usr/share/man/man3/el_gets.3.gz
/usr/share/man/man3/el_init.3.gz
/usr/share/man/man3/el_init_fd.3.gz
/usr/share/man/man3/el_insertstr.3.gz
/usr/share/man/man3/el_line.3.gz
/usr/share/man/man3/el_parse.3.gz
/usr/share/man/man3/el_push.3.gz
/usr/share/man/man3/el_reset.3.gz
/usr/share/man/man3/el_resize.3.gz
/usr/share/man/man3/el_set.3.gz
/usr/share/man/man3/el_source.3.gz
/usr/share/man/man3/el_wdeletestr.3.gz
/usr/share/man/man3/el_wget.3.gz
/usr/share/man/man3/el_wgetc.3.gz
/usr/share/man/man3/el_wgets.3.gz
/usr/share/man/man3/el_winsertstr.3.gz
/usr/share/man/man3/el_wline.3.gz
/usr/share/man/man3/el_wparse.3.gz
/usr/share/man/man3/el_wpush.3.gz
/usr/share/man/man3/el_wset.3.gz
/usr/share/man/man3/history.3.gz
/usr/share/man/man3/history_end.3.gz
/usr/share/man/man3/history_init.3.gz
/usr/share/man/man3/history_w.3.gz
/usr/share/man/man3/history_wend.3.gz
/usr/share/man/man3/history_winit.3.gz
/usr/share/man/man3/tok_end.3.gz
/usr/share/man/man3/tok_init.3.gz
/usr/share/man/man3/tok_line.3.gz
/usr/share/man/man3/tok_reset.3.gz
/usr/share/man/man3/tok_str.3.gz
/usr/share/man/man3/tok_wend.3.gz
/usr/share/man/man3/tok_winit.3.gz
/usr/share/man/man3/tok_wline.3.gz
/usr/share/man/man3/tok_wreset.3.gz
/usr/share/man/man3/tok_wstr.3.gz