Avoid warnings / Polishing

framework-docs/src/main/java/org/springframework/docs/core/aot/refresh/AotProcessingSample.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -30,6 +30,8 @@ public class AotProcessingSample {
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 		context.register(MyApplication.class);
 		context.refreshForAotProcessing(hints);
+		// ...
+		context.close();
 		// end::aotcontext[]
 	}