Make malformed danger blocks errors

doc/.vale/gitlab/AlertBoxDanger.yml

doc/administration/geo/disaster_recovery/index.md

...disaster_recovery/runbooks/planned_failover_multi_node.md

doc/administration/geo/index.md

doc/administration/geo/replication/datatypes.md

doc/administration/geo/replication/updating_the_geo_nodes.md

...dministration/geo/replication/version_specific_updates.md

doc/administration/gitaly/index.md

doc/administration/job_artifacts.md

doc/administration/job_logs.md

...istration/monitoring/performance/grafana_configuration.md

doc/administration/operations/moving_repositories.md

doc/administration/packages/container_registry.md

doc/administration/pages/index.md

doc/administration/raketasks/maintenance.md

doc/administration/repository_storage_types.md

doc/ci/docker/using_docker_build.md

doc/ci/pipelines/job_artifacts.md

doc/ci/triggers/README.md

doc/development/chaos_endpoints.md