ASoC: wm8523: Fix a typo in a comment

It is likely that this header file is about the WM8523.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201002165908.637809-1-christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8523.h

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * wm8523.h  --  WM8423 ASoC driver
+ * wm8523.h  --  WM8523 ASoC driver
  *
  * Copyright 2009 Wolfson Microelectronics, plc
  *