Updating the OpenAPI Guide with latest SmallRye features
Updating the OpenAPI Guide with latest SmallRye features

Signed-off-by: Phillip Kruger <6adc10f0c30a281dca0bb24c33e89a5992c9766b@gmail.com>

quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus