Maybe you meant www.darkroompro.com
The way to get that out of Google is to get it fixed on Amazon as that's where the quote originates. You could email John S. Douglas about seeing if he can edit his comment to be more accurate. Afterall, he helped with the book and I bet he'd be more than happy to help fix it. (Funny how John didn't mention being associated with the book himself.)
And if that doesn't work, you can always go to the Amazon site and you can click on the link that's on the page of reviews of your book that allows you to "report" the customer review to Amazon. I'm sure they can help you out.
It's your book that's being sold afterall, it would be good to have info associated with you be unambiguous.