fix key name

Author: edulauer

src/hooks/dou_hook.py

@@ -158,7 +158,7 @@ def search_text(
                     item["id"] = content["classPK"]
                     item["display_date_sortable"] = content["displayDateSortable"]
                     item["hierarchyList"] = content["hierarchyList"]
-                    item["arttype"] = content["arttype"]
+                    item["arttype"] = content["artType"]
 
                     all_results.append(item)