Fix the following warnings from "make htmldocs":

Documentation/ABI/testing/sysfs-driver-intel_sdsi:2:
  WARNING: Unexpected indentation.
  WARNING: Block quote ends without a blank line; unexpected unindent.
  WARNING: Definition list ends without a blank line; unexpected unindent.

By turning the error-code table into a proper ReST table. While at it
also fix the error-code table mixing tab and spaces for indentation
(switch to all tabs).

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220324164737.21765-2-hdegoede@redhat.com