Changing the Title of an Archive Page

By default, the archive page title is simply the name of the category or tag.

If you want to use a custom title instead, try this PHP snippet:

add_filter( 'get_the_archive_title', function( $title ) {
if ( is_category( 'CATEGORY NAME' ) ) {
$title = 'YOUR CUSTOM TITLE';
}

return $title;
}, 50 );

See more information on WordPress Conditional Tags.