main
cal: improve util-linux page and split POSIX, osx and *BSD (#12172)
chsh, chpass: add pages; pages/linux/chsh: update page (#12160)
chpass: fix non-existent sub-command and use of aliases (#16225)
*: remove redundant section numbers (#19678)
openbsd: add directory; openbsd/pkg_{add,info,delete}: add page (#10698)