fix typos in getting-started.md
fix typos in getting-started.md

davidvossel/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,fabiand/kubevirt,davidvossel/kubevirt,sungwonh/kubevirt,fabiand/kubevirt,stu-gott/kubevirt,admiyo/kubevirt,rmohr/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,mpolednik/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,rmohr/kubevirt,stu-gott/kubevirt,mpolednik/kubevirt,davidvossel/kubevirt,sungwonh/kubevirt,admiyo/kubevirt,davidvossel/kubevirt