media: atomisp: Fix spelling mistake in sh_css_internal.h

codespell reported misspelled words still and member.
This patch fixes misspellings.

Signed-off-by: Roshan Khatri <topofeverest8848@gmail.com>
Link: https://lore.kernel.org/r/20240501162620.86865-1-topofeverest8848@gmail.com


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>