regulator: rt5739: Spelling s/Rcihtek/Richtek/

Fix a misspelling of "Richtek".

Fixes: 4536f3b9 ("regulator: Add support for Richtek RT5739 voltage regulator")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/05f26d8e1e527f8b3fd2828f75ce2174e19c69e7.1678188171.git.geert+renesas@glider.beSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -1121,7 +1121,7 @@ config REGULATOR_RT5190A
 	  I2C control interface.
 
 config REGULATOR_RT5739
-	tristate "Rcihtek RT5739 Regulator"
+	tristate "Richtek RT5739 Regulator"
 	depends on I2C
 	select REGMAP_I2C
 	help