Update Version to V2.4
Update Version to V2.4

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