Change the label for the ACF Post Title field when used in acf_form( $args )

functions.php

<?php

add_filter( 'enter_title_here', 'yanco_change_title_text' );
function yanco_change_title_text( $title ){
    $screen = get_current_screen();
 
    if  ( 'leverandor' == $screen->post_type ) {
         $title = 'Virksomhedsnavn';
    }
 
    return $title;
}