wrong filename in smartos installation docs

http://docs.basho.com/riak/latest/ops/building/installing/smartos/

references http://s3.amazonaws.com/downloads.basho.com/riak/1.4/1.4.2/smartos/1.8/riak-1.4.2-SmartOS-i386.tgz

Which is contrary to what's listed here:

http://docs.basho.com/riak/latest/downloads/