fix wechat subscribe bug

pkg/sender/subscribe.go

@@ -116,7 +116,7 @@ func (this *SubscribeSender) SendAutoFightSubscribe(deviceId string) {
 	}
 	msg := make(map[string]map[string]string)
 	msg["thing2"] = make(map[string]string)
-	msg["thing2"]["value"] = "离线闯关即将结束，请及时收取您的离线闯关奖励。"
+	msg["thing2"]["value"] = "离线闯关结束，请收取您的离线闯关奖励。"
 	msg["thing1"] = make(map[string]string)
 	msg["thing1"]["value"] = "离线闯关提醒"