Update Macrometa's URL in About

[elof]

Hi there, I'm a PM at Macrometa. We switched our domain URL from .co to .com a bit earlier this year and I'm going around the interwebs tracking down .co link backs and asking if they can get changed to .com :)

Can you please update the URL in the about section of this repo to .com

Let me know if you have any questions at all. Have an awesome day.

Justin