[PATCH] ALSA: doc: use correct config variable name

[Takashi Iwai]

On Fri, 31 Jul 2020 21:28:21 +0200,
Julia Lawall wrote:
> 
> CONFIG_PCM_XRUN_DEBUG should be CONFIG_SND_PCM_XRUN_DEBUG
> 
> Signed-off-by: Julia Lawall <Julia.Lawall at inria.fr>

Applied, thanks.


Takashi