feat(quickstart): add syntax highlighting hints
feat(quickstart): add syntax highlighting hints

jonboulle/docs,robszumski/docs,atxwebs/docs,joshix/docs,endocode/coreos-docs,bq-xiao/docs,wli6/docs,ionave/docs,iankronquist/docs,mjg59/docs,ksmaheshkumar/docs-2,michelleN/docs,coreos/docs,skynet/docs,jdloft/docs,mischief/coreos-docs,hkjn/docs-1,marineam/coreos-docs