add_filter('gettext', 'custom_woocommerce_text', 20, 3);
add_filter('ngettext', 'custom_woocommerce_text', 20, 3);

function custom_woocommerce_text($translated, $text, $domain) {
    if ($domain === 'woocommerce') {
        switch ($text) {
            case 'Reviews':
                $translated = 'Yorumlar';
                break;
            case 'Review':
                $translated = 'Yorum';
                break;
        }
    }
    return $translated;
}