Polish "Samples cleanup"

Closes gh-10548

spring-boot-samples/spring-boot-sample-jetty-ssl/src/main/java/sample/jetty/ssl/web/SampleController.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,8 +21,10 @@ import org.springframework.web.bind.annotation.RestController;
 
 @RestController
 public class SampleController {
+
 	@GetMapping("/")
 	public String helloWorld() {
 		return "Hello World";
 	}
+
 }