Update dotnetcore.md
Update dotnetcore.md

removed version to ensure always up to date; getting latest
thaJeztah/docker.github.io,johnstep/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,anweiss/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io