WooCommerce - Change cart button of the upper-right corner

functions.php

<?php
// Cart Link
if ( !function_exists( 'cg_cart_link' ) ) {
  function cg_cart_link() {
    ?>
    <a class="cart-contents" href="<?php echo esc_url( WC()->cart->get_cart_url() ); ?>" title="<?php _e( 'View your shopping cart', 'woocommerce' ); ?>">
    <span class="count"><strong>Cart</strong>: <?php echo wp_kses_data( sprintf( _n( '%d item', '%d items', WC()->cart->get_cart_contents_count(), 'woocommerce' ), WC()->cart->get_cart_contents_count() ) ); ?></span>
    </a>
    <?php
  }
}