Upgrade to Dokka 2.1.0-Beta

Required for Java 25 support.

Closes gh-35532

buildSrc/build.gradle

@@ -20,7 +20,7 @@ ext {
 dependencies {
 	checkstyle "io.spring.javaformat:spring-javaformat-checkstyle:${javaFormatVersion}"
 	implementation "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}"
-	implementation "org.jetbrains.dokka:dokka-gradle-plugin:2.0.0"
+	implementation "org.jetbrains.dokka:dokka-gradle-plugin:2.1.0-Beta"
 	implementation "com.tngtech.archunit:archunit:1.4.1"
 	implementation "org.gradle:test-retry-gradle-plugin:1.6.2"
 	implementation "io.spring.javaformat:spring-javaformat-gradle-plugin:${javaFormatVersion}"

spring-web/src/main/kotlin/org/springframework/web/server/CoWebFilter.kt

@@ -57,8 +57,8 @@ abstract class CoWebFilter : WebFilter {
 
 		/**
 		 * Name of the [ServerWebExchange] attribute that contains the
-		 * [kotlin.coroutines.CoroutineContext] to be passed to the
-		 * [org.springframework.web.reactive.result.method.InvocableHandlerMethod].
+		 * [kotlin.coroutines.CoroutineContext] to be passed to
+		 * `org.springframework.web.reactive.result.method.InvocableHandlerMethod`.
 		 */
 		@JvmField
 		val COROUTINE_CONTEXT_ATTRIBUTE = CoWebFilter::class.java.getName() + ".context"