Order posts in a certain category by date ASC

gistfile1.txt

/* 
For when there's a category of team bios. 
If you create them up in alphabetical order, 
then the reverse date order will retain that order
This goes in functions.php
*/

/*Order bio Posts in reverse date order, set limit at 30 posts */
function prefix_modify_query_order( $query ) {
  if ( (is_main_query())
      && (is_category( $category = 'team-bios' ))) {
    $query->set( 'order', 'ASC' );
    $query->set('posts_per_page', 30);
  }
}
add_action( 'pre_get_posts', 'prefix_modify_query_order' );