Fix javadoc

Closes gh-13274

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/context/SpringBootTestCustomConfigNameTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -27,7 +27,7 @@ import org.springframework.test.context.junit4.SpringRunner;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@SpringBootTest} with a custom config name
+ * Tests for {@link SpringBootTest} with a custom config name
  *
  * @author Andy Wilkinson
  */