Bug 13065 - Receive shipment error message incorrectly styled

Bug 13065 - Receive shipment error message incorrectly styled

If there is an error during the receive shipment process the error
message is incorrectly styled. This patch fixes it.

To test you can trigger the error by accessing the page with incorrect
or missing parameters:

/cgi-bin/koha/acqui/parcels.pl?op=confirm

This should trigger the message. Apply the patch and confirm that the
error is now styled consistently with others in the staff client.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Small template change, works as described.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>