Update(mission.json): missing event mission

local-files/generic.json

@@ -576,7 +576,7 @@
   "受け取ったプレゼントはありません": "No presents received",
   "受け取らない": "Do not receive",
   "受け取りが完了しました。": "Receipt is complete.",
-  "受け取り期限：": "Receipt deadline:",
+  "受け取り期限：": "Deadline:",
   "受け取る": "Receive",
   "受け取るPアイテムを一つ選んでください": "Please select one P item to receive",
   "受取": "Receive",