Fix .sln file to reference correct project.
Fix .sln file to reference correct project.

JJVertical/dotnet-apiport,twsouthwick/dotnet-apiport,conniey/dotnet-apiport,conniey/dotnet-apiport,mjrousos/dotnet-apiport,mjrousos/dotnet-apiport,conniey/dotnet-apiport,twsouthwick/dotnet-apiport,Microsoft/dotnet-apiport,Microsoft/dotnet-apiport,Microsoft/dotnet-apiport,JJVertical/dotnet-apiport,mjrousos/dotnet-apiport-old