Fix @eventlistener example in reference manual

Closes spring-projectsgh-26622

Author: alex-krav

src/docs/asciidoc/core/core-beans.adoc

@@ -10724,15 +10724,15 @@ The following example shows how our notifier can be rewritten to be invoked only
 .Java
 ----
 	@EventListener(condition = "#blEvent.content == 'my-event'")
-	public void processBlockedListEvent(BlockedListEvent blockedListEvent) {
+	public void processBlockedListEvent(BlockedListEvent blEvent) {
 		// notify appropriate parties via notificationAddress...
 	}
 ----
 [source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
 .Kotlin
 ----
 	@EventListener(condition = "#blEvent.content == 'my-event'")
-	fun processBlockedListEvent(blockedListEvent: BlockedListEvent) {
+	fun processBlockedListEvent(blEvent: BlockedListEvent) {
 		// notify appropriate parties via notificationAddress...
 	}
 ----