CLI_OPTIONS_SCHEMA deprecation warning

[cmbritton]

I'm seeing the following message during serverless deploy.

Serverless: Deprecation warning: CLI options definitions were upgraded with "type" property (which could be one of "string", "boolean", "multiple"). Below listed plugins do not predefine type for introduced options:
             - ServerlessOpenApiDocumentation for "output", "format", "indent"
            Please report this issue in plugin issue tracker.
            Starting with next major release, this will be communicated with a thrown error.
            More Info: https://www.serverless.com/framework/docs/deprecations/#CLI_OPTIONS_SCHEMA

This is while running serverless 2.40.0 and serverless-openapi plugin 1.1.2.

Let me know if I can provide additional detail.

Thanks.