ALSA: pcm: fix typo in comment

Fix the typo in the comment for SNDRV_PCM_RATE_KNOT

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20240528191850.63314-1-alexandre.belloni@bootlin.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>