scsi: ufs: dt-bindings: Fix several grammar errors

Fix several grammar errors.

Signed-off-by: Zhaoming Luo <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

Documentation/devicetree/bindings/ufs/ufs-common.yaml

···
     enum: [1, 2]
     default: 2
     description:
-      Number of lanes available per direction.  Note that it is assume same
-      number of lanes is used both directions at once.
+      Number of lanes available per direction.  Note that it is assumed that
+      the same number of lanes are used in both directions at once.
 
   vdd-hba-supply:
     description: