follow backup page rename

howto/ganeti.md

howto/gitlab.md

howto/ldap.md

howto/new-person.md

howto/postgresql.md

howto/prometheus.md

howto/retire-a-host.md

howto/static-component.md

service.md

service/BTCpayserver.md

service/crm.md

service/static-shim.md