regulator: rt5133: Fix spelling mistake "regualtor" -> "regulator"

There is a spelling mistake in a dev_err message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20250814073326.17644-1-colin.i.king@gmail.com


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