docs: laptops: convert to ReST

Rename the laptops documentation files to ReST, add an
index for them and adjust in order to produce a nice html
output via the Sphinx build system.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

Documentation/ABI/testing/sysfs-block-device

@@ -45,7 +45,7 @@ Description:
 		- Values below -2 are rejected with -EINVAL
 
 		For more information, see
-		Documentation/laptops/disk-shock-protection.txt
+		Documentation/laptops/disk-shock-protection.rst
 
 
 What:		/sys/block/*/device/ncq_prio_enable