new-call-dialog: fix typo in comment
new-call-dialog: fix typo in comment

https://bugzilla.gnome.org/show_bug.cgi?id=661981

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets