[Feature] - Format links

## Description

It should format links correctly.

## Usage

```ts
format("[Google](https://google.com)");
// => "<a href="https://google.com">Google</a>"

format("*[Google](https://google.com)*");
// => "<b><a href="https://google.com">Google</a></b>"

format("_[Google](https://google.com)_");
// => "<em><a href="https://google.com">Google</a></em>"
```