iio: chemical: sps030: Reformat comment in a more readable way

It's easier to see the (lack of) difference between the lines when they
are visually aligned.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20230129132020.1352368-1-j.neuschaefer@gmx.netSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>