Update egg.json

src/locales/zh_CN/egg.json

@@ -11,6 +11,7 @@
   "gachaTypeLegendary": "传说概率上升",
   "gachaTypeMove": "稀有概率上升",
   "gachaTypeShiny": "闪光概率上升",
+  "eventType": "Mystery Event",
   "selectMachine": "选择一个机器。",
   "notEnoughVouchers": "你没有足够的兑换券！",
   "tooManyEggs": "你的蛋太多啦！",
@@ -23,4 +24,4 @@
   "moveUPGacha": "蛋招式UP!",
   "shinyUPGacha": "闪光UP!",
   "legendaryUPGacha": "UP!"
-}
+}