Fix example of setting record command in cfg file in FAQ
Fix example of setting record command in cfg file in FAQ

asciinema/asciinema-server,asciinema/asciinema.org,asciinema/asciinema.org,asciinema/asciinema.org,asciinema/asciinema-server,asciinema/asciinema-server,asciinema/asciinema.org,asciinema/asciinema-server