Replace @link by proper KDoc class reference in tests

Closes gh-30836

spring-beans/src/test/kotlin/org/springframework/beans/KotlinBeanUtilsTests.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -20,7 +20,7 @@ import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 
 /**
- * Kotlin tests for {@link BeanUtils}.
+ * Kotlin tests for [BeanUtils].
  * 
  * @author Sebastien Deleuze
  */

spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/KotlinBeanValidationBeanRegistrationAotProcessorTests.kt

@@ -30,7 +30,7 @@ import org.springframework.beans.factory.support.RootBeanDefinition
 import org.springframework.validation.beanvalidation.BeanValidationBeanRegistrationAotProcessorTests.*
 
 /**
- * Kotlin tests for {@link BeanValidationBeanRegistrationAotProcessor}.
+ * Kotlin tests for [BeanValidationBeanRegistrationAotProcessor].
  *
  * @author Sebastien Deleuze
  */

spring-core/src/test/kotlin/org/springframework/core/io/support/KotlinSpringFactoriesLoaderTests.kt

@@ -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.
@@ -22,7 +22,7 @@ import org.junit.jupiter.api.Test
 import org.springframework.core.io.support.SpringFactoriesLoader.ArgumentResolver
 
 /**
- * Kotlin tests for {@link SpringFactoriesLoader}.
+ * Kotlin tests for [SpringFactoriesLoader].
  *
  * @author Phillip Webb
  */

spring-webflux/src/test/kotlin/org/springframework/web/reactive/result/method/annotation/KotlinMessageWriterResultHandlerTests.kt

@@ -40,7 +40,7 @@ import java.time.Duration
 import java.util.*
 
 /**
- * Kotlin unit tests for {@link AbstractMessageWriterResultHandler}.
+ * Kotlin unit tests for [AbstractMessageWriterResultHandler].
  *
  * @author Sebastien Deleuze
  */