Tweaks & updates to docs for session 2
Tweaks & updates to docs for session 2

dotnet-presentations/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,jongalloway/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,jongalloway/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop