Add missing space in the prompt.
Add missing space in the prompt.

In the shell command, for a better UX a space between
the prompt and the input is needed.

nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,nirbheek/cerbero,nirbheek/cerbero