封面错误

 `url2Real` 函数添加 `decodeURIComponent`

```js
//转化封面url为实际url
export const url2Real = (url) => {
	if (url.search(/agent/i) === -1) {
      return 'http://api.zhuishushenqi.com' + url;
    }
    else{
      return decodeURIComponent(url.replace(/\/agent\//, ''));
    }
}
```