Update index.js

Author: nanashili

api/github/webhooks/index.js

@@ -1,6 +1,6 @@
 const { createNodeMiddleware, createProbot } = require("probot");
 
-const app = require("../../app");
+const app = require('../../../app');
 
 module.exports = createNodeMiddleware(app, {
   probot: createProbot(),