ASoC: wm8741: Fix typo in Kconfig prompt

Fix trivial copy-n-paste mistake.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20200304140241.340-1-axel.lin@ingics.com


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