I'm using prettier with a project that uses react styleguidist to document components (docs here: https://react-styleguidist.js.org/docs/documenting.html)

when including just JSX in a codeblock it would be nice if prettier would exclude the leading (or following depending on your --no-semi setting) from the output

Prettier 1.8.1
Playground link

--parser markdown
--no-semi

Input:

```js
<Button>label</Button>
```

Output:

```js
;<Button>label</Button>
```

Expected behavior:

```js
<Button>label</Button>
```