collectCoverageFrom does not like absolute paths

还没有人认领这个 Issue。

The `collectCoverageFrom` in itg-react-script's `config/jest.js` uses absolute paths, which doesn't work. As a workaround, you can define this in your local jest.config.js:

```js
module.exports = {
collectCoverage: true,
collectCoverageFrom: [
'src/**/*.{js,jsx}',
],
};
```

从 config/jest.js 开始，将其 collectCoverageFrom 设置与 issue 中所示的本地 jest.config.js workaround 进行比较。重现 coverage 收集过程，然后验证该配置无需绝对路径即可正常工作。

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