docs: add // ... in sample code

Author: kenjis

user_guide_src/source/outgoing/localization/001.php

@@ -6,6 +6,8 @@
 
 class App extends BaseConfig
 {
+    // ...
+
     public string $defaultLocale = 'en';
 
     // ...

user_guide_src/source/outgoing/localization/002.php

@@ -6,6 +6,8 @@
 
 class App extends BaseConfig
 {
+    // ...
+
     public bool $negotiateLocale = true;
 
     // ...

user_guide_src/source/outgoing/localization/003.php

@@ -6,6 +6,8 @@
 
 class App extends BaseConfig
 {
+    // ...
+
     public array $supportedLocales = ['en', 'es', 'fr-FR'];
 
     // ...