Fix symbol sample page, to use correct symbol `!randomIBAN` (capital BAN)
Fix symbol sample page, to use correct symbol `!randomIBAN` (capital BAN)

fhoeben/hsac-fitnesse-fixtures,ilseh/hsac-fitnesse-fixtures,teunisnl/hsac-fitnesse-fixtures,fhoeben/hsac-fitnesse-fixtures,ilseh/hsac-fitnesse-fixtures,GDasai/hsac-fitnesse-fixtures,fhoeben/hsac-fitnesse-fixtures,GDasai/hsac-fitnesse-fixtures,teunisnl/hsac-fitnesse-fixtures,teunisnl/hsac-fitnesse-fixtures,ilseh/hsac-fitnesse-fixtures,fhoeben/hsac-fitnesse-fixtures,teunisnl/hsac-fitnesse-fixtures,ilseh/hsac-fitnesse-fixtures,GDasai/hsac-fitnesse-fixtures,GDasai/hsac-fitnesse-fixtures