Update pre-release version
Update pre-release version

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