Removed extra spaces in the 3PAR Block Storage doc

The HP 3PAR Fibre Channel and iSCSI Drivers doc section of the Block
Storage Admin Guide contains an extra space in one of the the parameter
names, this will cause customer confusion. Also, an extra space is
present before the end of a sentence period.
Fixes: bug 1161923

Change-Id: I649cfedaea44ff510c87201a81ab411a3a80226c