devm-helpers: Fix devm_delayed_work_autocancel() kerneldoc

devm-helpers: Fix devm_delayed_work_autocancel() kerneldoc

The kerneldoc for devm_delayed_work_autocancel() contains invalid
parameter description.

Fix the parameter description. And while at it - make it more obvous that
this function operates on delayed_work. That helps differentiating with
resource-managed INIT_WORK description (which should follow in near future)

Fixes: 0341ce544394 ("workqueue: Add resource managed version of delayed work init")
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/db3a8b4b8899fdf109a0cc760807de12d3b4f09b.1619028482.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>