nunoduarte Hi. It's not in layout or in override. Not sure where is it coming from, so to not extend the solution any further here is a script to do it without change so code. Copy it to custom script field in template's configuration.
<script>(function($) {$(document).ready(function() {
$('.product-itens.created_date .content-col-docman').html($.datepicker.formatDate('dd M yy', new Date( $('.product-itens.created_date .content-col-docman').html() )));
});})(jQuery)</script>