Fix raw types warning in a new code

* Fix `xref` path in a `validation.adoc`

Author: garyrussell

spring-kafka-docs/src/main/antora/modules/ROOT/pages/kafka/receiving-messages/validation.adoc

@@ -81,4 +81,4 @@ Starting with version 2.5.11, validation now works on payloads for `@KafkaHandle
 See xref:kafka/receiving-messages/class-level-kafkalistener.adoc[`@KafkaListener` on a Class].
 
 Starting with version 3.1, you can perform validation in an `ErrorHandlingDeserializer` instead.
-See xref:../serdes.adoc#error-handling-deserializer[Using `ErrorHandlingDeserializer`] for more information.
+See xref:kafka/serdes.adoc#error-handling-deserializer[Using `ErrorHandlingDeserializer`] for more information.

spring-kafka/src/main/java/org/springframework/kafka/config/KafkaListenerEndpointRegistrar.java

@@ -189,7 +189,7 @@ public void afterPropertiesSet() {
 	protected void registerAllEndpoints() {
 		synchronized (this.endpointDescriptors) {
 			for (KafkaListenerEndpointDescriptor descriptor : this.endpointDescriptors) {
-				if (descriptor.endpoint instanceof MultiMethodKafkaListenerEndpoint mmkle
+				if (descriptor.endpoint instanceof MultiMethodKafkaListenerEndpoint<?, ?> mmkle
 						&& this.validator != null) {
 					mmkle.setValidator(this.validator);
 				}

spring-kafka/src/main/java/org/springframework/kafka/support/serializer/ErrorHandlingDeserializer.java

@@ -166,7 +166,7 @@ private void setupFunction(Map<String, ?> configs, String configKey) {
 		if (configs.containsKey(configKey)) {
 			try {
 				Object value = configs.get(configKey);
-				Class<?> clazz = value instanceof Class cls ? cls : ClassUtils.forName((String) value, null);
+				Class<?> clazz = value instanceof Class<?> cls ? cls : ClassUtils.forName((String) value, null);
 				Assert.isTrue(Function.class.isAssignableFrom(clazz), "'function' must be a 'Function ', not a "
 						+ clazz.getName());
 				this.failedDeserializationFunction = (Function<FailedDeserializationInfo, T>)
@@ -182,7 +182,7 @@ private void setupValidator(Map<String, ?> configs) {
 		if (configs.containsKey(VALIDATOR_CLASS) && this.validator == null) {
 			try {
 				Object value = configs.get(VALIDATOR_CLASS);
-				Class<?> clazz = value instanceof Class cls ? cls : ClassUtils.forName((String) value, null);
+				Class<?> clazz = value instanceof Class<?> cls ? cls : ClassUtils.forName((String) value, null);
 				Object instance = clazz.getDeclaredConstructor().newInstance();
 				Assert.isInstanceOf(Validator.class, instance, "'validator' must be a 'Validator', not a ");
 				this.validator = (Validator) instance;