dt-bindings: iio: afe: voltage-divider: Spelling s/curcuit/circuit/

Fix a misspelling of "circuit".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/a8597e54b55dedc51025fe3073d25ef0d659d0dc.1686045793.git.geert+renesas@glider.be


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>