scsi: advansys: docs: Eliminate duplicated word

Drop the doubled word "be".

Link: https://lore.kernel.org/r/20200707180414.10467-18-rdunlap@infradead.org


Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>