:bug: stop trimming type by_episode cb

plugins/cia-endpoints/includes/class.make-sortby.php

     public function by_episode( $request ) {
         $q = new WP_Query($this->make_args($request, null));
         global $wpdb;
-        
-        $type = $q->query['post_type'] . 's';
+        $type = $q->query['post_type'];
         
         // TODO: optimize this query
         $items = $wpdb->get_results($wpdb->prepare(
             WHERE wp_posts.post_type = %s AND wp_posts.post_status = 'publish' 
                 AND (wp_p2p.p2p_type = %s OR wp_p2p.p2p_type = %s) 
             ORDER BY header.post_date DESC, related_episode, wp_posts.post_date DESC",
-            trim($type, 's'), $type . '_to_episodes' , 'episodes_to_' . $type,
+            $type, $type . 's_to_episodes' , 'episodes_to_' . $type . 's',
         ));
         wp_reset_postdata();