Remove extra trailing comma
Remove extra trailing comma

Signed-off-by: Sam Smith <03a07629efb0a02c7bbe7cc340a4243da1ab861a@gmail.com>

degrim/dotnet-core-buildpack,degrim/asp.net5-buildpack,degrim/dotnet-core-buildpack,degrim/dotnet-core-buildpack,degrim/dotnet-core-buildpack,degrim/dotnet-core-buildpack,cloudfoundry-community/asp.net5-buildpack