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

@@ -112,4 +112,4 @@
   "是": "Yes",
   "否": "No",
   "快速测试": "Quick Test"
-}
+}

src/locales/zh-cn.json

@@ -115,4 +115,4 @@
   "是": "是",
   "否": "否",
   "Video Test": "视频测试"
-}
+}