Docs: improve quickstart guide
Docs: improve quickstart guide

Fixes #1553

MarkDBlackwell/hugo,anthonyfok/hugo,tubo028/hugo,melo/hugo,ryanclarke/hugo,gohugoio/hugo,mayah/hugo,Zenithar/hugo,ryanclarke/hugo,mdhender/hugo,digitalcraftsman/hugo,ffrizzo/hugo,vbatoufflet/hugo,tatsushid/hugo,melo/hugo,mdhender/hugo,anthonyfok/hugo,fedelibre/hugo,coderzh/hugo,abourget/hugo,fhergomez/hugo,sprig/hugo,tischda/hugo,derekperkins/hugo,sprig/hugo,MarkDBlackwell/hugo,bramp/hugo,kujohn/hugo,soundrussian/hugo,fedelibre/hugo,mayah/hugo,ifraixedes/hugo,abourget/hugo,kujohn/hugo,bogem/hugo,tischda/hugo,fedelibre/hugo,halostatue/hugo,ifraixedes/hugo,derekperkins/hugo,tubo028/hugo,bramp/hugo,halostatue/hugo,anthonyfok/hugo,jygastaud/hugo,Zenithar/hugo,gohugoio/hugo,digitalcraftsman/hugo,soundrussian/hugo,coderzh/hugo,fhergomez/hugo,mitchchn/hugo,gohugoio/hugo,ffrizzo/hugo,mitchchn/hugo,vbatoufflet/hugo,fedelibre/hugo,bogem/hugo,mdhender/hugo,mdhender/hugo,jygastaud/hugo,tatsushid/hugo