changes to Update dataset docs based on API change after review
changes to Update dataset docs based on API change after review

hsaputra/cdap,chtyim/cdap,chtyim/cdap,anthcp/cdap,mpouttuclarke/cdap,mpouttuclarke/cdap,chtyim/cdap,anthcp/cdap,mpouttuclarke/cdap,hsaputra/cdap,hsaputra/cdap,caskdata/cdap,caskdata/cdap,hsaputra/cdap,anthcp/cdap,caskdata/cdap,anthcp/cdap,caskdata/cdap,anthcp/cdap,chtyim/cdap,mpouttuclarke/cdap,chtyim/cdap,hsaputra/cdap,caskdata/cdap,mpouttuclarke/cdap,caskdata/cdap,chtyim/cdap