Display the Custom Post Type title

wp-custom-post-archive-title.php

<?php
/*
This is optimized for archive.php and archive-{posttype}.php template files for displaying the title of the post type. 
Usage: 
<?php post_type_archive_title( $prefix, $display ); ?>
Parameters:
$prefix
    (string) (optional) What to display before the title
        Default: None
$display
    (bool) (optional) Whether to display or retrieve title
        Default: true
Return Values
    (string) Title when retrieving, null when displaying or failure.
*/
post_type_archive_title();