Fix Lion DiskMaker version and link.

[Lion DiskMaker](http://liondiskmaker.com/) installation fails:

```
Error: it seems the symlink source is not there: /opt/homebrew-cask/Caskroom/lion-disk-maker/lastest/Lion DiskMaker 2.app
```

The directory structure is now: `Lion DiskMaker {{ VERSION }}/Lion DiskMaker 2.app`.

This PR fixes version and link.

Hope it helps.