update release note
update release note

LordZoltan/docfx,superyyrrzz/docfx,hellosnow/docfx,LordZoltan/docfx,928PJY/docfx,superyyrrzz/docfx,hellosnow/docfx,dotnet/docfx,DuncanmaMSFT/docfx,928PJY/docfx,pascalberger/docfx,pascalberger/docfx,pascalberger/docfx,LordZoltan/docfx,dotnet/docfx,928PJY/docfx,DuncanmaMSFT/docfx,hellosnow/docfx,LordZoltan/docfx,dotnet/docfx,superyyrrzz/docfx