Add this to the functions.php of your child theme (download a free blank child-theme here).
remove_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 10 ); add_action( 'woocommerce_single_product_summary', 'woocommerce_output_product_data_tabs', 60 );
Source: https://businessbloomer.com/woocommerce-move-product-tabs-short-description/