Update docs that refer to kubevirt-config ConfigMap to use kubevirt CR
Update docs that refer to kubevirt-config ConfigMap to use kubevirt CR

While here correct path to kubectl.sh

Signed-off-by: Maya Rashish <309f5d63d2311d00fe13deb09dd851fb2714413c@redhat.com>

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