Fixed lint issue

server/notification.js

@@ -6,7 +6,7 @@ const AliyunSms = require("./notification-providers/aliyun-sms");
 const Apprise = require("./notification-providers/apprise");
 const Bark = require("./notification-providers/bark");
 const ClickSendSMS = require("./notification-providers/clicksendsms");
-const CallMeBot =  require("./notification-providers/call-me-bot");
+const CallMeBot = require("./notification-providers/call-me-bot");
 const SMSC = require("./notification-providers/smsc");
 const DingDing = require("./notification-providers/dingding");
 const Discord = require("./notification-providers/discord");