chore: checklist.panelTitle typo

frontend/app_flowy/assets/translations/en.json

@@ -270,7 +270,7 @@
       "searchOption": "Search for an option"
     },
     "checklist": {
-      "panelTitle": "Search an option or create one"
+      "panelTitle": "Add an item"
     },
     "menuName": "Grid"
   },