Force forward slashes on SUMMARY.md paths
Force forward slashes on SUMMARY.md paths

this prevent windows user to generate invalid path on unix OS
Reference to issue #39 on gitbook-editor

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