Re-order images as per versions
Re-order images as per versions

Reordering the images in the ReadMe so that they appear ordered as per
version first rather than as per product tag. This makes it easier to
spot all the desired images for a version.

@dotnetbot skip CI please

dotnet/dotnet-docker,dotnet/dotnet-docker,MichaelSimons/dotnet-docker,MichaelSimons/dotnet-docker