scsi: docs: dc395x: Shorten the chapter heading

Make the heading be concise yet still descriptive.
This makes the subsystem table of contents more readable (IMO).

Signed-off-by: Randy Dunlap <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Cc: "James E.J. Bottomley" <[e-mail]>
Cc: "Martin K. Petersen" <[e-mail]>
Cc: [e-mail]
Cc: Jonathan Corbet <[e-mail]>
Cc: [e-mail]
Cc: Oliver Neukum <[e-mail]>
Cc: Ali Akcaagac <[e-mail]>
Cc: Jamie Lenehan <[e-mail]>
Cc: [e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

Documentation/scsi/dc395x.rst

···
 .. SPDX-License-Identifier: GPL-2.0
 
-======================================
-README file for the dc395x SCSI driver
-======================================
+==================
+dc395x SCSI driver
+==================
 
 Status
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