Fix inline code that is a link

doc/elixir/Regex.html#compile/2

``` md
Check the moduledoc for `Regex`
```

will produce

``` html
Check the moduledoc for <a href="Regex.html"><code class="inline">Regex</code></a>
```

but now we are not seeing the link, because the color gets overriden by .line

i think we should have the link inside code,  but still not sure if this is the style we want.
