ASoC: codecs: wm9713: remove spurious kernel-doc comment start

Fix W=1 warning
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200701181320.80848-6-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm9713.c

@@ -807,7 +807,7 @@ static void pll_factors(struct snd_soc_component *component,
 	pll_div->k = K;
 }
 
-/**
+/*
  * Please note that changing the PLL input frequency may require
  * resynchronisation with the AC97 controller.
  */