Fix #491: handle correctly url without path for links
Fix #491: handle correctly url without path for links

jocr1627/gitbook,OriPekelman/gitbook,iamchenxin/gitbook,hongbinz/gitbook,wewelove/gitbook,xiongjungit/gitbook,npracht/documentation,Abhikos/gitbook,palerdot/gitbook,xiongjungit/gitbook,FKV587/gitbook,switchspan/gitbook,jasonslyvia/gitbook,gaearon/gitbook,qingying5810/gitbook,2390183798/gitbook,lucciano/gitbook,Keystion/gitbook,qingying5810/gitbook,guiquanz/gitbook,grokcoder/gitbook,iflyup/gitbook,jasonslyvia/gitbook,megumiteam/documentation,kamyu104/gitbook,switchspan/gitbook,boyXiong/gitbook,JohnTroony/gitbook,lucciano/gitbook,escopecz/documentation,bjlxj2008/gitbook,haamop/documentation,tzq668766/gitbook,sunlianghua/gitbook,snowsnail/gitbook,mautic/documentation,athiruban/gitbook,wewelove/gitbook,nycitt/gitbook,thelastmile/gitbook,GitbookIO/gitbook,tshoper/gitbook,JozoVilcek/gitbook,CN-Sean/gitbook,shibe97/gitbook,intfrr/gitbook,gencer/gitbook,sudobashme/gitbook,alex-dixon/gitbook,minghe/gitbook,webwlsong/gitbook,hujianfei1989/gitbook,grokcoder/gitbook,escopecz/documentation,ZachLamb/gitbook,vehar/gitbook,guiquanz/gitbook,2390183798/gitbook,iflyup/gitbook,xxxhycl2010/gitbook,bradparks/gitbook,minghe/gitbook,gdbooks/gitbook,gdbooks/gitbook,hongbinz/gitbook,webwlsong/gitbook,thelastmile/gitbook,mautic/documentation,mruse/gitbook,codepiano/gitbook,anrim/gitbook,alex-dixon/gitbook,OriPekelman/gitbook,ferrior30/gitbook,shibe97/gitbook,hujianfei1989/gitbook,snowsnail/gitbook,xcv58/gitbook,intfrr/gitbook,bjlxj2008/gitbook,a-moses/gitbook,sudobashme/gitbook,vehar/gitbook,nycitt/gitbook,tzq668766/gitbook,athiruban/gitbook,bradparks/gitbook,haamop/documentation,megumiteam/documentation,boyXiong/gitbook,justinleoye/gitbook,CN-Sean/gitbook,a-moses/gitbook,youprofit/gitbook,jocr1627/gitbook,ferrior30/gitbook,palerdot/gitbook,strawluffy/gitbook,justinleoye/gitbook,ZachLamb/gitbook,rohan07/gitbook,codepiano/gitbook,sunlianghua/gitbook,kamyu104/gitbook,gaearon/gitbook,ryanswanson/gitbook,rohan07/gitbook,gencer/gitbook,npracht/documentation,FKV587/gitbook,yaonphy/SwiftBlog,xxxhycl2010/gitbook,iamchenxin/gitbook,tshoper/gitbook,youprofit/gitbook,xcv58/gitbook,JohnTroony/gitbook,mruse/gitbook