A few options has been missing from `docs/usage/configuration.md`.

[hkleungai]

Q&A (please complete the following information)

• OS: N/A
• Browser: N/A
• Version: Latest
• Method of installation: N/A
• Swagger-UI version: Latest
• Swagger/OpenAPI version: Latest

Content & configuration

It seems the below options appears on src/core/config/defaults.js, but missing from docs/usage/configuration.md.

• components
• fn
• configs
• initialState
• fileUploadMediaTypes
• uncaughtExceptionHandler

I think they should be added into the markdown doc, for better referencing purpose.