dt-bindings: iio/adc: qcom,spmi-iadc: fix example node name

The IADC is a child of an SPMI PMIC, which in turn sits on an SPMI bus.

Fixes: a4e6bf69418c ("dt-bindings:iio:adc:qcom,spmi-iadc: txt to yaml format conversion.")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231130171628.12257-3-johan+linaro@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/adc/qcom,spmi-iadc.yaml

@@ -50,7 +50,8 @@ additionalProperties: false
 examples:
   - |
     #include <dt-bindings/interrupt-controller/irq.h>
-    spmi {
+
+    pmic {
         #address-cells = <1>;
         #size-cells = <0>;
         pmic_iadc: adc@3600 {