Better API doc linking

[{@link}](http://usejsdoc.org/tags-inline-link.html) tag renders as plain text in API Reference documentation.

For example:

```js
/**
* My Addon Function
*
* {@link https://ember-learn.github.io/ember-cli-addon-docs/}
*
* [ember-cli-addon-docs]{@link https://ember-learn.github.io/ember-cli-addon-docs/}
*
* {@link https://ember-learn.github.io/ember-cli-addon-docs/|ember-cli-addon-docs}
*
* {@link https://ember-learn.github.io/ember-cli-addon-docs/ ember-cli-addon-docs}
*
* @function myFunction
* @returns {Boolean} True.
*/
export default function myFunction() {
return true;
}
```

renders as:

```
myFunction(): boolean

My Addon Function

{@link https://ember-learn.github.io/ember-cli-addon-docs/}

[ember-cli-addon-docs]{@link https://ember-learn.github.io/ember-cli-addon-docs/}

{@link https://ember-learn.github.io/ember-cli-addon-docs/|ember-cli-addon-docs}

{@link https://ember-learn.github.io/ember-cli-addon-docs/ ember-cli-addon-docs}
```

I reference another project I borrowed code from and want to link back to it.