drivers: adc: ad7124: fix device binding logic description

Fixed pd-switch-enable boolean logic description to the logic as
decribed in the data sheet for the device.

Signed-off-by: NoahStephens <[email protected]>

Author: NoahStephens

dts/bindings/adc/adi,ad7124-adc.yaml

@@ -21,11 +21,11 @@ properties:
     type: boolean
     default: false
     description: |
-      Enable internal low side power switch for AD7124
-      - true: The switch is in the open position
-      - false: The switched is in the closed position
+      Enable internal low-side power-down switch for AD7124
+      - true: The switch is in the closed position
+      - false: The switch is in the open position
       The default configuration places the switch in the
-      closed position for control setup upon power-up 
+      open position for control setup upon power-up 
       or after reset.
 
   filter-type-mask: