changes in the class

src/test/java/device/usbPlayer/UsbPlayerTest.java

@@ -66,7 +66,7 @@ void louderTest(String testName, UsbPlayer inputPlay, int expectedResult) {
         up1.louder();
         UsbPlayer up2 = new UsbPlayer();
         up2.setLautstaerke(100);
-       up2.louder();
+        up2.louder();
         return Stream.of(
                 Arguments.of("Volume is : 1 ", up1, 1),
                 Arguments.of("Volume is : 100 ", up2, 100)