Merge branch 'docs-update-ldap-cron' into 'master'

Update LDAP cron site

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182317



Merged-by: Phillip Wells <pwells@gitlab.com>
Approved-by: Nathan Black <nblack@gitlab.com>
Approved-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Anthony Subia <asubia@gitlab.com>