*: Remove comment tags in GoDoc
*: Remove comment tags in GoDoc

Adding blank line between comment tag and package name in doc.go. So
that the comment tags such as '+k8s:deepcopy-gen=package' do not show up
in GoDoc.

Kubernetes-commit: 61117761cd4a1b2e6ad9ff2d7eb915f3d2739dc6

kubernetes/sample-controller,kubernetes/sample-controller