adjust value

resource/locales/en-US/translation.json

@@ -2,7 +2,7 @@
   "Help": "Help",
   "Edit": "Edit",
   "Delete": "Delete",
-  "Delete All": "Delete All",
+  "delete_all": "Delete all",
   "Duplicate": "Duplicate",
   "Copy": "Copy",
   "Click to copy": "Click to copy",

resource/locales/ja/translation.json

@@ -2,7 +2,7 @@
   "Help": "ヘルプ",
   "Edit": "編集",
   "Delete": "削除",
-  "Delete All": "全て削除",
+  "delete_all": "全て削除",
   "Duplicate": "複製",
   "Copy": "コピー",
   "Click to copy": "クリックでコピー",