`dangerouslySetInnerHTML`には`__html`をキーに持つオブジェクトを返す関数を渡す必要がある

Like this:
```js
const App = () => {
const createHtml = () => {
return { __html: "<script>alert('Too dangerous!!!')</script>" }
}
return <div dangerouslySetInnerHTML={createHtml()} />
}
```