Mexico locale support

Hi there, I was in the process of registrating an affiliate account on each country and I noticed that amazon has a program for Mexico as well (http://www.amazon.com.mx/) but the corresponding slot is missing on the plugin, I guess this Mexico one just came out recently and you might not have noticed. Is it posible to update the plugin to add it? Or is there a quick fix I could try to get it operating ASAP? Thanks!

https://wordpress.org/plugins/amazon-link/