[Inspiro theme] Change URL in wp_list_categories

I have a photography website http://www.iclicu.com

The wordpress theme I am using is Inspiro. On my gallery page (www.iclicu.com/gallery) I have this code in the php template to get categories listed on top of the page e.g. Abstract, Architecture etc

<?php wp_list_categories( array( ‘title_li’ => ”, ‘hierarchical’ => true, ‘taxonomy’ => ‘portfolio’, ‘depth’ => 1 ) ); ?>

This code generates output that looks like
<li class=”cat-item cat-item-161″>Abstract

I want to change the href output in the above to “http://www.iclicu.com/project/abstract/&#8221;

Basically, each of the photo categories point to http://www.iclicu.com/portfolio/category/ and I want them to point to http://www.iclicu.com/project/category/