Fix get_product_list

Author: Raul Gutierrez

astroquery/jwst/core.py

@@ -794,7 +794,7 @@ def get_product_list(self, plane_id, product_type=None):
         if plane_id is None:
             raise ValueError("Missing required argument: 'plane_id'")
 
-        prodtype_condition=self.__get_producttype_condition(product_type)
+        prodtype_condition=self.__get_artifact_producttype_condition(product_type)
         query = "SELECT  * " +\
             "FROM " + str(self.JWST_ARTIFACT_TABLE) +\
             " WHERE planeid='"+plane_id+"' " +\