Edit the “added to cart” message

Paste the following in functions.php:

/* Edit WooCommerce added to cart message */
add_filter ( 'wc_add_to_cart_message', 'wc_add_to_cart_message_filter', 10, 2 );
function wc_add_to_cart_message_filter($message, $product_id = null) {
    $titles[] = get_the_title( $product_id );
    $titles = array_filter( $titles );
    $added_text = sprintf( _n( '%s has been added to your cart.', '%s have been added to your cart.', sizeof( $titles ), 'woocommerce' ), wc_format_list_of_items( $titles ) );
    $message = sprintf( '%s

%s%s

',
                    esc_html( $added_text ),
                    esc_url( wc_get_page_permalink( 'checkout' ) ),
                    esc_html__( '', 'woocommerce' ),
                    esc_url( wc_get_page_permalink( 'cart' ) ),
                    esc_html__( 'Voir le panier →', 'woocommerce' ));

    return $message;
}

Edit text as needed.

Source: https://stackoverflow.com/questions/25880460/woocommerce-how-to-edit-the-added-to-cart-message