Update module.md

Fifthwolf · web-flow · commit afbc6f1f48de · 2017-08-19T17:45:01.000+08:00
diff --git a/docs/module.md b/docs/module.md
@@ -625,7 +625,7 @@ export {users} from './users';
 
 ```javascript
 // script.js
-import {db, users} from './constants';
+import {db, users} from './index';
 ```
 
 ## import()
