[docs]: Add a tutorial for the procedure needed to update Go version
[docs]: Add a tutorial for the procedure needed to update Go version

Add a small tutorial that will document the procedure needed
to update Go version.

Signed-off-by: Itamar Holder <b6ebf050aad0538d1e30c557853a5c8924b66230@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt