lang: Update Chinese (Simplified) translations (#1894)

Co-authored-by: JustFor <35858818+zhongqingsong@users.noreply.github.com>

plugins/diffing/romfs/lang/zh_CN.json

@@ -17,6 +17,7 @@
         "hex.diffing.view.diff.provider_b": "提供者B",
         "hex.diffing.view.diff.removed": "移除",
         "hex.diffing.view.diff.settings": "无可用设置",
-        "hex.diffing.view.diff.settings.no_settings": "无可用设置"
+        "hex.diffing.view.diff.settings.no_settings": "无可用设置",
+        "hex.diffing.view.diff.task.diffing": "对比数据……"
     }
 }