Fix copyright header comments in riak_cs_wm_stats.erl
Fix copyright header comments in riak_cs_wm_stats.erl

basho/riak_cs,laurenrother/riak_cs,sdebnath/riak_cs,basho/riak_cs_report,yangchengjian/riak_cs,yangchengjian/riak_cs,GabrielNicolasAvellaneda/riak_cs,laurenrother/riak_cs,yangchengjian/riak_cs,basho/riak_cs,dragonfax/riak_cs,sdebnath/riak_cs,basho/riak_cs,dragonfax/riak_cs,laurenrother/riak_cs,basho/riak_cs,sdebnath/riak_cs,basho/riak_cs_lfs,dragonfax/riak_cs,yangchengjian/riak_cs,laurenrother/riak_cs,sdebnath/riak_cs,GabrielNicolasAvellaneda/riak_cs,GabrielNicolasAvellaneda/riak_cs,dragonfax/riak_cs,GabrielNicolasAvellaneda/riak_cs