ac:link replacement missing

Hi there,

Some links to internal pages via only title don't appear to parse correctly:

```

From , we want to do some stuff:

FWIW, it renders in Confluence as:
```

From Some Meeting Notes, we want to do some stuff:

Output (c2md/c2deveo/etc):
```From , we want to do some stuff:```

If I switch to `` the `...` flows through to the output.

I'd _expect_ it to return:

```From [Some Meeting Notes](Some Meeting Notes), we want to do some stuff:```

Looks like the bottom section from https://github.com/highsource/confluence-to-markdown-converter/blob/gh-pages/samples/Jsonix/Mapping-XML-to-JavaScript-Objects.xml has similar link styles and is affected too