fix typo introduced into create_game

* Fixes #1047
* Jenkins: http://jenkins.buttonweavers.com:8080/job/buttonmen-cgolubi1/298/

Since this is just another change to the example scripts, i don't think it needs to be tested before accepting unless y'all want to.  It affects the behavior of `create_game -p`, a utility method for creating games against each player you're not currently playing.