ABI: sysfs-platform-dell-privacy-wmi: correct ABI entries

ABI: sysfs-platform-dell-privacy-wmi: correct ABI entries

As described at Documentation/ABI/README doesn't contain an
Attribute: field.

The way sysfs ABI is supposed to work is that each different
attribute would have a separate file. So, the right way to
map this would be like:

	/sys/.../dell_privacy_supported_type/mic_mute
	/sys/.../dell_privacy_supported_type/camera_shutter

	/sys/.../dell_privacy_current_state/mic_mute
	/sys/.../dell_privacy_current_state/camera_shutter

However, it seems to late to fix that, as this was merged already on
Kernel 5.13, and a change right now would be a regression.

So, instead, let's at least fix the entry to match the expected
format.

While here, fix the format of the contact, which is not a valid
e-mail URL.

This should also fix the current warnings produced when building the
docs:

	Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi:35: WARNING: Unexpected indentation.
	Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi:2: WARNING: Unexpected indentation.

Fixes: 8af9fa37b8a3 ("platform/x86: dell-privacy: Add support for Dell hardware privacy")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/42846621fdf2bf206feb114d06b14cbc47475fb5.1632740376.git.mchehab+huawei@kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>