docs: Add surge.sh to main page of static site hosters
docs: Add surge.sh to main page of static site hosters

See #1994

tubo028/hugo,tischda/hugo,mdhender/hugo,mayah/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,abourget/hugo,mdhender/hugo,anthonyfok/hugo,soundrussian/hugo,vbatoufflet/hugo,fedelibre/hugo,vbatoufflet/hugo,anthonyfok/hugo,abourget/hugo,mitchchn/hugo,soundrussian/hugo,bogem/hugo,digitalcraftsman/hugo,mdhender/hugo,mayah/hugo,ffrizzo/hugo,tischda/hugo,ffrizzo/hugo,gohugoio/hugo,tubo028/hugo,mitchchn/hugo,melo/hugo,gohugoio/hugo,jygastaud/hugo,gohugoio/hugo,Zenithar/hugo,jygastaud/hugo,MarkDBlackwell/hugo,melo/hugo,Zenithar/hugo,digitalcraftsman/hugo,fedelibre/hugo,MarkDBlackwell/hugo,bogem/hugo,anthonyfok/hugo