Updated README of vertx-web

Signed-off-by: francesco <[email protected]>

Author: slinkydeveloper

web-examples/README.adoc

@@ -416,9 +416,11 @@ Plus how to interact with secured resources using the user object directly.
 
 The link:src/main/java/io/vertx/example/web/oauth2/Server.java[OAuth2 example]
 
-== OpenAPI 3 server
+== HTTP Request Validation & OpenAPI 3 Router Factory
 
-The OpenAPI 3 server the creation of a Vert.x Web router handler that performs web request/response validation
-based on an OpenAPI 3 yaml schema for of the Swagger Petstore application.
+The link:src/main/java/io/vertx/example/web/validation/ValidationExampleServer.java[ValidationExampleServer] is an
+example of various usages of validation capabilities included in
+link:http://vertx.io/docs/#web[Vert.x Web API Contract package]
 
-The link:src/main/java/io/vertx/example/web/openapi3/OpenAPI3Server.java[OpenAPI 3 example]
+The link:src/main/java/io/vertx/example/web/openapi3/OpenAPI3Server.java[OpenAPI3Server] is an example of
+OpenAPI3RouterFactory, the interface to build your design driven router based on your OpenAPI specification.