fix(demo): fix sources shown in the demo

Make the annotation to show the correct Layout being used

Author: mlopezFC

src/test/java/com/flowingcode/vaadin/addons/extendedlogin/TestLoginLayoutView.java

@@ -39,7 +39,7 @@
 @Route(value = "extended-login/login-layout", layout = TestLoginLayout.class)
 @Ignore
 @CssImport("./styles/extended-login-styles.css") // hide-source
-// show-source @Route("value = "extended-login/login-layout-demo", layout = ExtendedLoginDemoView.class)
+// show-source @Route("value = "extended-login/login-layout-demo", layout = TestLoginLayout.class)
 public class TestLoginLayoutView extends Div {
 
   public TestLoginLayoutView() {