Fix spelling of separated: s, sepera, separa, g

Fix spelling of separated: s, sepera, separa, g

The used command for fixing the script is the following.

    $ git grep sepera | cut --delimiter=: --fields=1 | xargs sed -i s,sepera,separa,g

This patch is motivated by a patch in Debian from Martin-Éric Racine [1].

[1] http://anonscm.debian.org/gitweb/?p=pkg-pulseaudio/pulseaudio.git;a=commitdiff;h=70e7261a615141908c0cf366fd49e0fc0f550fbf