fix: add missing newlines at the end of localization files

- Ensured proper formatting by adding newlines at the end of the English and Chinese localization JSON files to maintain consistency and prevent potential issues with file parsing.

src/locales/en.json

@@ -113,4 +113,4 @@
   "否": "No",
   "快速测试": "Quick Test",
   "监控组": "Monitor Group"
-}
+}

src/locales/zh-cn.json

@@ -116,4 +116,4 @@
   "否": "否",
   "Video Test": "视频测试",
   "监控组": "监控组"
-}
+}