update summary.md with info on handling of html tags
update summary.md with info on handling of html tags

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