Bug 11552: (follow-up) fix a typo in a comment

Signed-off-by: Galen Charlton <gmc@esilibrary.com>

C4/Acquisition.pm

@@ -1749,7 +1749,7 @@ sub SearchOrders {
             LEFT JOIN biblioitems ON biblioitems.biblionumber=biblio.biblionumber
     };
 
-    # If we search on ordernumber, we retrieve the transfered order is a transfer has been done.
+    # If we search on ordernumber, we retrieve the transfered order if a transfer has been done.
     $query .= q{
             LEFT JOIN aqorders_transfers ON aqorders_transfers.ordernumber_to = aqorders.ordernumber
     } if $ordernumber;