scsi: storvsc: Fix spelling mistake

Fix typo: "trigerred" --> "triggered"

Link: https://lore.kernel.org/r/20200624135600.14274-1-f.suligoi@asem.it


Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>