dt-bindings: hwmon: Fix typo in TI ADS7828 bindings

Fix typo in example for DT binding, changed from 'comatible'
to 'compatible'.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Link: https://lore.kernel.org/r/20210531134655.720462-1-iwamatsu@nigauri.orgSigned-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/hwmon/ti,ads7828.yaml

@@ -49,7 +49,7 @@ examples:
         #size-cells = <0>;
 
         adc@48 {
-            comatible = "ti,ads7828";
+            compatible = "ti,ads7828";
             reg = <0x48>;
             vref-supply = <&vref>;
             ti,differential-input;