fix url when hosted in a github project project 
fix url when hosted in a github project project 

I needed this for https://github.com/tyrcho/blog
wscrlhs/wscrlhs.github.io,Gaohaoyang/gaohaoyang.github.io,tomens/tomens.github.io,shellbacksq/shellbacksq.github.io,deniswu1202/jekyll_pages,TGyAlDeen/blog,AndyTsangChun/blog,tearslee/blog,booox/booox.github.io,Garyteck/Garyteck.github.io,tomens/tomens.github.io,Garyteck/Garyteck.github.io,V-I-C-T-O-R/V-I-C-T-O-R.github.io,TGyAlDeen/blog,booox/booox.github.io,andrewxiechina/andrewxiechina.github.io,SangmokDavidOh/sangmokdavidoh.github.io,wisgood/wisgood.github.io,codingted/codingted.github.io,amsterdam0626/amsterdam0626.github.io,ZevveZ/zevvez.github.io,tearslee/blog,AndyTsangChun/blog,SeraphRoy/SeraphRoy.github.io,V-I-C-T-O-R/V-I-C-T-O-R.github.io,SeraphRoy/SeraphRoy.github.io,andrewxiechina/andrewxiechina.github.io,V-I-C-T-O-R/V-I-C-T-O-R.github.io,shuxiaow/shuxiaow.github.io,wisgood/wisgood.github.io,Gaohaoyang/gaohaoyang.github.io,deniswu1202/jekyll_pages,shuxiaow/shuxiaow.github.io,wscrlhs/wscrlhs.github.io,shellbacksq/shellbacksq.github.io,vste111/vste111.github.io,SeraphRoy/SeraphRoy.github.io,codingted/codingted.github.io,amsterdam0626/amsterdam0626.github.io,wscrlhs/wscrlhs.github.io,shellbacksq/shellbacksq.github.io,SangmokDavidOh/sangmokdavidoh.github.io,Garyteck/Garyteck.github.io,deniswu1202/jekyll_pages,codingted/codingted.github.io,codingted/codingted.github.io,codingted/codingted.github.io,TGyAlDeen/blog,ZevveZ/zevvez.github.io