Update _config.yml

Edit 'Get Started' url for home page header navigation. It was resulting in a 404.
Update _config.yml

Fixed my own error - I didn't put quotes around to display hashtag.
Re: Edit 'Get Started' url for home page header navigation. The addition of the backwards slash was resulting in a 404.
Merge pull request #3 from seantunwin/link-url-patch

Update _config.yml