Add woocommerce coupon value for you saved text

Add WooCommerce coupon value to "You Saved" text.

// Cart page add the woocommerce you saved amount  
add_filter('wdr_add_woocommerce_amount_saved_text', '__return_true');

// Thankyou and Order page add the woocommerce you saved text
add_filter('wdr_add_woocommerce_amount_saved_text_order_page', '__return_true');