Format 'Table Of Files' Field Display For Commerce Product Display?
I am not sure which tpl.php file you will need to override, but you can try to "inspect" for it using Devel Themer and then override it with your own tpl.php. 

This doc page has some common overrides and you can kind of get the override pattern. I am guessing you will need to something like field--field-name--content-type.tpl.php.