BAEL-3715: Sync code and article (#9932)

spring-core-2/src/test/java/com/baeldung/springevents/asynchronous/AsynchronousCustomSpringEventsIntegrationTest.java

@@ -17,7 +17,7 @@ public class AsynchronousCustomSpringEventsIntegrationTest {
 
     @Test
     public void testCustomSpringEvents() throws InterruptedException {
-        publisher.publishEvent("Hello world!!");
+        publisher.publishCustomEvent("Hello world!!");
         System.out.println("Done publishing asynchronous custom event. ");
     }
 }

spring-core-2/src/test/java/com/baeldung/springevents/synchronous/SynchronousCustomSpringEventsIntegrationTest.java

@@ -22,7 +22,7 @@ public class SynchronousCustomSpringEventsIntegrationTest {
     @Test
     public void testCustomSpringEvents() {
         isTrue(!listener.isHitCustomEventHandler(), "The value should be false");
-        publisher.publishEvent("Hello world!!");
+        publisher.publishCustomEvent("Hello world!!");
         System.out.println("Done publishing synchronous custom event. ");
         isTrue(listener.isHitCustomEventHandler(), "Now the value should be changed to true");
     }