Docs: Navigation update for administration folder - 4

doc/administration/auth/ldap/ldap-troubleshooting.md

doc/administration/auth/ldap/ldap_synchronization.md

...stration/geo/disaster_recovery/background_verification.md

doc/administration/geo/disaster_recovery/planned_failover.md

...disaster_recovery/runbooks/planned_failover_multi_node.md

...isaster_recovery/runbooks/planned_failover_single_node.md

doc/administration/geo/index.md

doc/administration/geo/replication/configuration.md

doc/administration/geo/replication/container_registry.md

doc/administration/geo/replication/disable_geo.md

doc/administration/geo/replication/object_storage.md

doc/administration/geo/replication/remove_geo_site.md

doc/administration/geo/replication/troubleshooting.md

doc/administration/geo/replication/tuning.md

doc/administration/gitaly/praefect.md

doc/administration/gitaly/troubleshooting.md

doc/administration/integration/diagrams_net.md

doc/administration/integration/kroki.md

doc/administration/integration/mailgun.md

doc/administration/integration/plantuml.md