Update README.md

Co-authored-by: Guillaume Smet <[email protected]>

Author: domdorn

README.md

@@ -447,7 +447,7 @@ def mkRoutes(router: Router) =
 ```
 
 
-### `Future[T]` and `Promise[T]` support in Rest-Endpoints
+### `Future[T]` and `Promise[T]` support in REST endpoints
 
 This extension allows you to return `Future[T]` and `Promise[T]` from your rest-endpoints.