ALSA: snd-usb: fix some typos in endpoint.c documentation
ALSA: snd-usb: fix some typos in endpoint.c documentation

Also be more specific about some details while at it.

Signed-off-by: Daniel Mack <70806a71956ed8873ecff8522779dae1401a1b4a@gmail.com>
Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas