217题题干

Challenge [Introducing JavaScript Object Notation JSON](https://www.freecodecamp.cn/challenges/introducing-javascript-object-notation-json) has an issue.
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36.
Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:
```javascript
var myMusic = [
{
"artist": "Billy Joel",
"title": "Piano Man",
"release_year": 1973,
"formats": [
"CS",
"8T",
"LP" ],
"gold": true
}
// 请在这里添加专辑
];

```
因为它允许 数据结构 是 字符串，数字，布尔值，**_字符串_**，和 对象 的任意组合。
原文They allow for arbitrary combinations of strings, numbers, booleans, arrays, **_functions_**, and objects.
应该将第二个字符串改成**函数**