How to whitelist website?

Hello, how do I whitelist a website that Avast is reporting as falsely having a virus? wxw.canadadrugs.com

I want to have the web scanner, but I know this website does not have a virus. Thank you very much.

Hello,
I don’t see any detection. post the screenshot of avast!'s alert window, please.

Milos

http://grab.by/hn1w

Here is a screenshot of what shows up.