desktop/AlsaMixer.app: Updated download link (and homepage).
desktop/AlsaMixer.app: Updated download link (and homepage).

R.I.P dockapps.org, long live to dockapps.windowmaker.org!

Signed-off-by: Matteo Bernardini <638c89fd48409d8ef3e3a3c9b0a27af8629fef36@slackbuilds.org>

panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds