scsi: docs: convert sd-parameters.txt to ReST

Link: https://lore.kernel.org/r/8d0b75b0faf13a2e81373570d6ce601b629fb22a.1583136624.git.mchehab+huawei@kernel.orgSigned-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Documentation/scsi/index.rst

@@ -38,5 +38,6 @@ Linux SCSI Subsystem
    scsi_mid_low_api
    scsi-parameters
    scsi
+   sd-parameters
 
    scsi_transport_srp/figures

Documentation/scsi/sd-parameters.txt → Documentation/scsi/sd-parameters.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+======================================
 Linux SCSI Disk Driver (sd) Parameters
 ======================================
 
@@ -5,18 +8,20 @@ cache_type (RW)
 ---------------
 Enable/disable drive write & read cache.
 
- cache_type string          | WCE RCD | Write cache | Read cache
-----------------------------+---------+-------------+------------
- write through              | 0   0   | off         | on
- none                       | 0   1   | off         | off
- write back                 | 1   0   | on          | on
- write back, no read (daft) | 1   1   | on          | off
+===========================   === ===   ===========   ==========
+ cache_type string            WCE RCD   Write cache   Read cache
+===========================   === ===   ===========   ==========
+ write through                0   0     off           on
+ none                         0   1     off           off
+ write back                   1   0     on            on
+ write back, no read (daft)   1   1     on            off
+===========================   === ===   ===========   ==========
 
-To set cache type to "write back" and save this setting to the drive:
+To set cache type to "write back" and save this setting to the drive::
 
   # echo "write back" > cache_type
 
 To modify the caching mode without making the change persistent, prepend
-"temporary " to the cache type string. E.g.:
+"temporary " to the cache type string. E.g.::
 
   # echo "temporary write back" > cache_type