fix: lutim not required properly

Signed-off-by: Raccoon <raccoon@hackmd.io>

Author: a60814billy

lib/imageRouter/lutim.js

@@ -2,7 +2,7 @@
 const config = require('../config')
 const logger = require('../logger')
 
-const lutim = require('lib/imageRouter/lutim')
+const lutim = require('lutim')
 
 exports.uploadImage = function (imagePath, callback) {
   if (!imagePath || typeof imagePath !== 'string') {