fixed duplicate localization strings

_locales/en/messages.json

@@ -2,19 +2,22 @@
   "config": {
     "message": "en"
   },
-  "manifest_name": {
+  "manifest_name": {
+
     "message": "ShopAI",
     "description": "Extension name"
-  },
+  },
+
   "manifest_description": {
     "message": "Shop wisely with AI!",
     "description": "Extension description"
   },
   "GUI_welcome_headline": {
     "message": "Welcome to ShopAI!",
-    "description": "Welcome message"
+    "description": "Welcome message"
+
   },
-  "GUI_welcome_headline": {
+  "GUI_welcome_version": {
     "message": "You’ve got version $manifest_version$.",
     "description": "Version number of welcome message",
     "placeholders": {
@@ -26,7 +29,8 @@
   },
   "GUI_error_stop": {
     "message": "The web browser can not open this page.",
-    "description": "Error message when opening the HTML page directly"
+    "description": "Error message when opening the HTML page directly"
+
   },
   "GUI_credits_0": {
     "message": "Made with love.",

_locales/zh-Hans/messages.json

@@ -14,7 +14,7 @@
 		"message": "欢迎使用购物人类智能！",
 		"description": "欢迎信息"
 	},
-	"GUI_welcome_headline": {
+	"GUI_welcome_version": {
 		"message": "本浏览器有 $manifest_version$ 版本的。",
 		"description": "版本简介",
 		"placeholders": {