Add initial route doc section with locales

@@ -152,6 +152,23 @@ void main() {
 }
 ```
 
+To handle navigation to non-defined routes (404 error), you can define an unknownRoute page in GetMaterialApp.
+
+```dart
+void main() {
+  runApp(
+    GetMaterialApp(
+      unknownRoute: GetPage(name: '/notfound', page: () => UnknownRoutePage()),
+      initialRoute: '/',
+      getPages: [
+        GetPage(name: '/', page: () => MyHomePage()),
+        GetPage(name: '/second', page: () => Second()),
+      ],
+    )
+  );
+}
+```
+
 ### Send data to named Routes
 
 Just send what you want for arguments. Get accepts anything here, whether it is a String, a Map, a List, or even a class instance.

@@ -151,6 +151,23 @@ void main() {
 }
 ```
 
+Para manejar la navegación a rutas no definidas (error 404), puede definir una página de ruta desconocida en GetMaterialApp.
+
+```dart
+void main() {
+  runApp(
+    GetMaterialApp(
+      unknownRoute: GetPage(name: '/notfound', page: () => UnknownRoutePage()),
+      initialRoute: '/',
+      getPages: [
+        GetPage(name: '/', page: () => MyHomePage()),
+        GetPage(name: '/second', page: () => Second()),
+      ],
+    )
+  );
+}
+```
+
 ### Enviar datos a rutas nombradas
 
 Envía lo que quieras usando el parámetro arguments. GetX acepta cualquier cosa aquí, ya sea un String, Map, List o incluso una instancia de clase.

@@ -247,6 +247,23 @@ void main() {
 }
 ```
 
+Para lidar com a navegação para rotas não definidas (erro 404), você pode definir uma página unknownRoute em GetMaterialApp.
+
+```dart
+void main() {
+  runApp(
+    GetMaterialApp(
+      unknownRoute: GetPage(name: '/notfound', page: () => UnknownRoutePage()),
+      initialRoute: '/',
+      getPages: [
+        GetPage(name: '/', page: () => MyHomePage()),
+        GetPage(name: '/second', page: () => Second()),
+      ],
+    )
+  );
+}
+```
+
 ### Enviar dados para rotas nomeadas
 
 Apenas envie o que você quiser no parâmetro `arguments`. Get aceita qualquer coisa aqui, seja String, Map, List, ou até a instância de uma classe.

@@ -149,6 +149,23 @@ void main() {
 }
 ```
 
+要处理到未定义路线的导航（404错误），可以在GetMaterialApp中定义unknownRoute页面。
+
+```dart
+void main() {
+  runApp(
+    GetMaterialApp(
+      unknownRoute: GetPage(name: '/notfound', page: () => UnknownRoutePage()),
+      initialRoute: '/',
+      getPages: [
+        GetPage(name: '/', page: () => MyHomePage()),
+        GetPage(name: '/second', page: () => Second()),
+      ],
+    )
+  );
+}
+```
+
 ### 发送数据到别名路由
 
 只要发送你想要的参数即可。Get在这里接受任何东西，无论是一个字符串，一个Map，一个List，甚至一个类的实例。