Fix typos in Documentation/: 'F'-'G'

This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'F'-'G'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

Documentation/scsi/aic7xxx_old.txt

@@ -317,7 +317,7 @@ linux-1.1.x and fairly stable since linux-1.2.x, and are also in FreeBSD
 	initial DEVCONFIG values for each of your aic7xxx controllers as
 	they are listed, and also record what the machine is detecting as
 	the proper termination on your controllers.  NOTE: the order in
-	which the initial DEVCONFIG values are printed out is not gauranteed
+	which the initial DEVCONFIG values are printed out is not guaranteed
 	to be the same order as the SCSI controllers are registered.  The
 	above option and this option both work on the order of the SCSI
 	controllers as they are registered, so make sure you match the right