Как исправить код микроразметки?

      <div class="goods-tab goods-gallery product-slider-holder clearfix"> 
        <div class="flexslider active product-gallery-holder"> 
          <ul class="slides"> 
            {% FOR goods_images %} 
              <li class="item"> 
                <img src="{goods_images.LARGE}" alt="{goods_images.NAME}" data-zoom-image="{goods_images.LARGE}" itemprop="image" /> 
              </li> 
            {% ENDFOR %} 
          </ul> 
        </div> 
      </div>