Update exception message in JacksonJsonMessageConverter

Closes gh-36448

Signed-off-by: gbouwen <57719521+gbouwen@users.noreply.github.com>

spring-jms/src/main/java/org/springframework/jms/support/converter/JacksonJsonMessageConverter.java

@@ -317,7 +317,7 @@ public class JacksonJsonMessageConverter implements SmartMessageConverter, BeanC
 			throws JMSException, IOException {
 
 		throw new IllegalArgumentException("Unsupported message type [" + targetType +
-				"]. MappingJackson2MessageConverter by default only supports TextMessages and BytesMessages.");
+				"]. JacksonJsonMessageConverter by default only supports TextMessages and BytesMessages.");
 	}
 
 	/**