[Plugin: Woocommerce] Add custom HTML5 under description in category page

Hi everyone, i have a trouble with Woocommerce: i need to insert a custom link under every product’s short description in every category page. I’ve tried to modify single-product/short-description.php in the plugin’s root, it works but not where i want. I see the link in the single product page after short description, but not in the list of category page! How can i do? Someone that resolved the same trouble in the past? Thanks very much!