[alsa-devel] minor aplay man page correction

alsa-project/alsa-utils pull request #34 was edited from YetAnotherNerd:

Request URL : https://github.com/alsa-project/alsa-utils/pull/34 Patch URL : https://github.com/alsa-project/alsa-utils/pull/34.patch Repository URL: https://github.com/alsa-project/alsa-utils