scsi: docs: convert st.txt to ReST

Link: https://lore.kernel.org/r/6b2ddb36983e81e7028de6e5fd0c643c2fb4c6c9.1583136624.git.mchehab+huawei@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/Documentation/scsi/scsi-parameters.rst b/Documentation/scsi/scsi-parameters.rst
index 0c4bbb1..9aba897 100644
--- a/Documentation/scsi/scsi-parameters.rst
+++ b/Documentation/scsi/scsi-parameters.rst
@@ -73,7 +73,7 @@
 
 	osst=		[HW,SCSI] SCSI Tape Driver
 			Format: <buffer_size>,<write_threshold>
-			See also Documentation/scsi/st.txt.
+			See also Documentation/scsi/st.rst.
 
 	scsi_debug_*=	[SCSI]
 			See drivers/scsi/scsi_debug.c.
@@ -105,7 +105,7 @@
 			See header of drivers/scsi/sim710.c.
 
 	st=		[HW,SCSI] SCSI tape parameters (buffers, etc.)
-			See Documentation/scsi/st.txt.
+			See Documentation/scsi/st.rst.
 
 	wd33c93=	[HW,SCSI]
 			See header of drivers/scsi/wd33c93.c.