Remove parent from custom post type

I’ve created a new custom post type with WordPress. However, the slug adds the post to a parent, like so:

However, I’d like it to create:

Is this possible? This is how I’ve registered the post type:

function create_films() {
  register_post_type( 'films',
      'labels' => array(
        'name' => 'Films' ,
        'singular_name' =>  'Films'

    'public' => true,
    'has_archive' => false,
    'taxonomies' => array('category', 'post_tag') 


add_action( 'init', 'create_films' );

And this is the documentation.

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