dt-bindings: iio: dac: AD5770R: update maintainers

Update bindings maintainerns section.
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Acked-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20220526134603.75216-5-alexandru.tachici@analog.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml

@@ -8,7 +8,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Analog Devices AD5770R DAC device driver
 
 maintainers:
-  - Mircea Caprioru <mircea.caprioru@analog.com>
+  - Alexandru Tachici <alexandru.tachici@analog.com>
 
 description: |
   Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be