Fix psycopg2 bad exception name reference

mapserver/cgi-bin/layer_times_postgres.py

@@ -93,7 +93,7 @@ try:
         with conn.cursor() as cur:
             cur.execute(sql.SQL(query_str).format(sql.Identifier(table_name)))
             times = cur.fetchall()
-except psycopg2.errors.DataBaseError:
+except psycopg2.errors.DatabaseError:
     print("""Status: 500 Database Error
 Content-type: text/plain
 Access-Control-Allow-Origin: *