minor cleanup

core-java-io/src/main/java/com/baeldung/java/nio2/watcher/DirectoryWatcherExample.java

@@ -10,7 +10,7 @@ import java.nio.file.WatchKey;
 import java.nio.file.WatchService;
 
 public class DirectoryWatcherExample {
-    
+
     public static void main(String[] args) throws IOException, InterruptedException {
         WatchService watchService = FileSystems.getDefault().newWatchService();
         Path path = Paths.get(System.getProperty("user.home"));
@@ -25,5 +25,5 @@ public class DirectoryWatcherExample {
 
         watchService.close();
     }
-    
+
 }