* Add flag to disable API warning
This flag is useful when you are using an external API resolver like express when defining an API route, since the native functionality doesn't realize that the API actually sent a response.
A very simple use case example https://github.com/PabloSzx/next-external-api-resolver-examplefixes#10589
* Update api-middlewares.md
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>