i18n zh-hans: "Add Remove Spot" means adding a spot removal

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/locales/zh-hans.json

@@ -11,7 +11,7 @@
   "Add Folder to Local": "将文件夹添加到本地",
   "Add Point Color Sample": "添加点颜色样本",
   "Add Red Eye Correction": "添加红眼校正",
-  "Add Remove Spot": "添加/移除污点",
+  "Add Remove Spot": "添加污点去除",
   "Add Selected Photos": "添加所选照片",
   "Add a rule (⌥-click: a group)": "添加条件（按 ⌥ 单击：添加组）",
   "Add in place": "在原位置添加",