use old website's internal link names

The links from the sidebar were working, but not some of the inner links.
Using the `{#innerLink}` inside the `.md` file will keep the old links alive and be consistent with the inner links in the docs also.

fixes #163
```js
var anchorName = text.match(/{#(.*)}/)[1];
```

```js
link = anchorName || slug(text);
```