Update app.js

@@ -10,7 +10,7 @@ var express = require('express');
 const request = require('request');
 const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
 const TOKEN = '/OxzMlYdmehXwfIxEHS7MSlX470jmkfxfp6kWPMTALlk+hwhqErglwOfMB/cOGVlZCOdMQHSy+Fb48XUJa6C1FHx16wxqcRgRhwGkl6pO5QP65jb8qSmN7/esJvzp2y4ozwkW+Hy+6giAx8pPPMzeQdB04t89/1O/w1cDnyilFU='
-const PAPAGO_URL = 'PAPAGO URL'
+const PAPAGO_URL = 'https://openapi.naver.com/v1/papago/n2mt'
 const PAPAGO_ID = 'PAPAGO ID'
 const PAPAGO_SECRET = 'PAPAGO SECRET'
 var fs = require('fs');