Hello, I got it!
I change the function on template-function.php. :
function arilewp_read_more_button_class($read_class)
{ global $post;
return ‘<p>ID}\” class=\”more-link\”>” .esc_html__(‘Leia mais’,’arilewp’).”</p>”;
}
add_filter( ‘the_content_more_link’, ‘arilewp_read_more_button_class’ );