Minor updates to v25 quick start (#4909)

* Change route annotation to empty string

* Replace Aura screenshots with Lumo ones

Author: peholmst

articles/getting-started/quick-start/images/fifth-view.png

@@ -43,7 +43,7 @@ import com.vaadin.flow.component.orderedlayout.VerticalLayout;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 
-@Route("/") // <1>
+@Route("") // <1>
 @PageTitle("Hello, Vaadin!") // <2>
 public class MainView extends VerticalLayout { // <3>
     public MainView() {
@@ -114,7 +114,7 @@ import com.vaadin.flow.component.orderedlayout.VerticalLayout;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 
-@Route("/")
+@Route("")
 @PageTitle("Hello, Vaadin!")
 public class MainView extends VerticalLayout {
     public MainView() {
@@ -156,7 +156,7 @@ import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 
-@Route
+@Route("")
 @PageTitle("Hello, Vaadin!")
 public class MainView extends VerticalLayout {
     public MainView() {
@@ -205,7 +205,7 @@ import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 
-@Route
+@Route("")
 @PageTitle("Hello, Vaadin!")
 public class MainView extends VerticalLayout {
     public MainView() {
@@ -247,7 +247,7 @@ import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 
-@Route
+@Route("")
 @PageTitle("Hello, Vaadin!")
 public class MainView extends VerticalLayout {
     public MainView() {
@@ -317,7 +317,7 @@ import com.vaadin.flow.server.streams.DownloadHandler;
 import java.io.IOException;
 // end::snippet[]
 
-@Route
+@Route("")
 @PageTitle("Hello, Vaadin!")
 public class MainView extends VerticalLayout {
     public MainView() {