regulator: dt-bindings: qcom,rpmh: clean up example indentation

Remove a line break and increase indentation of the continuation line
to avoid having the 'regulator-allowed-modes' example be reproduced
verbatim with four-spaces indentation (instead of a tab, which is still
too little) in devicetree sources.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221116102054.4673-2-johan+linaro@kernel.org


Signed-off-by: Mark Brown <broonie@kernel.org>