check_every: never is not recognize for a resource

The extension wrongly reports

'never' is not a valid 'Duration'. A duration string is a sequence of decimal numbers, each with optional fraction and a unit suffix, such as '300ms', '1.5h' or '2h45m'. Valid time units are 'ns', 'us' (or 'µs'), 'ms', 's', 'm', 'h'.vscode-concourse(YamlSchemaProblem)

The documentation about check_every for resource: https://concourse-ci.org/resources.html#schema.resource.check_every