LP#1266937: Fix missing/incorrect regex for authority in Vandelay.pm

Add in missing "~" in function import_record_list_impl when
type is authority records. Also replace "auth" with "authority"
so that the generated values match up with functions in the
database.

Signed-off-by: Srey Seng <sreyseng@gmail.com>
Signed-off-by: Bill Erickson <berick@esilibrary.com>