Fix incorrect docs on API support level
Fix incorrect docs on API support level

Change-Id: Ib4371a5c99c40b6c61b7ba64b165cec768cc3c0d
Signed-off-by: Matthew Bentham <286076deec2404ae356dd8bc92f2f71e81044bd4@arm.com>

ARM-software/android-nn-driver,ARM-software/android-nn-driver