I've (finally) added a tutorial about the http4k O...

# http4k

[dave]

I've (finally) added a tutorial about the http4k OpenApi3 support to the website. Feedback (or upvotes 🙂 ) very welcome: https://www.reddit.com/r/Kotlin/comments/d36z03/tutorial_documenting_http4k_apis_with_openapi3/