Fixed information on region in the getting_started doc.
Fixed information on region in the getting_started doc.

pratikmallya/pyrax,EdLeafe/pyrax,opsdisk/pyrax,roelvv/pyrax,briancurtin/pyrax,sivel/pyrax,ddaeschler/pyrax,mandx/pyrax,naemono/pyrax,vikomall/pyrax,0dataloss/pyrax,rackerlabs/heat-pyrax,rackspace/pyrax