URL for list of author's posts shows different user

When you click on the byline for Joe Hutnak, you get a list of his articles. However, the URL shows up as:

http://warwickpost.com/author/orourkes-3/

With my own posts, the url shows as: http://warwickpost.com/author/borkowski-robgmail-com/

How do I edit this? I've been looking, but had no luck. Hoping it won't require a plugin...