[test] fixed customLogger method annotation override.

Author: moon-kun-woong

src/test/java/org/dfbf/soundlink/CustomLogger.java

@@ -4,9 +4,11 @@
 import org.junit.jupiter.api.extension.TestWatcher;
 
 public class CustomLogger implements TestWatcher {
+    @Override
     public void testSuccessful(ExtensionContext context) {
         System.out.println("통과 되었습니다! -> " + context.getDisplayName() + " checked!");
     }
+    @Override
     public void testFailed(ExtensionContext context, Throwable cause) {
         System.out.println("불확실한 테스트 입니다 -> " + context.getDisplayName() + " failed...");
     }