Fix doc build folder copy problem (#3583)
Fix doc build folder copy problem (#3583)


subutai/nupic,vitaly-krugl/nupic,lscheinkman/nupic,lscheinkman/nupic,vitaly-krugl/nupic,scottpurdy/nupic,neuroidss/nupic,neuroidss/nupic,alfonsokim/nupic,ywcui1990/nupic,rhyolight/nupic,rhyolight/nupic,rhyolight/nupic,numenta/nupic,ywcui1990/nupic,rcrowder/nupic,numenta/nupic,ywcui1990/nupic,subutai/nupic,alfonsokim/nupic,rcrowder/nupic,scottpurdy/nupic,scottpurdy/nupic,rcrowder/nupic,alfonsokim/nupic,neuroidss/nupic,numenta/nupic,vitaly-krugl/nupic,lscheinkman/nupic,subutai/nupic