docs/project.rst: minor change to how file structure is presented
docs/project.rst: minor change to how file structure is presented

amikey/portia,verylasttry/portia,sntran/portia,hmilywb/portia,hmilywb/portia,livepy/portia,amikey/portia,CENDARI/portia,nju520/portia,anjuncc/portia,verylasttry/portia,pombredanne/portia,anjuncc/portia,nju520/portia,NoisyText/portia,lodow/portia-proxy,Youwotma/portia,PrasannaVenkadesh/portia,pombredanne/portia,pombredanne/portia,lodow/portia-proxy,livepy/portia,hanicker/portia,Suninus/portia,PrasannaVenkadesh/portia,PrasannaVenkadesh/portia,flip111/portia,Youwotma/portia,amikey/portia,SouthStar/portia,chennqqi/portia,Suninus/portia,naveenvprakash/portia,Suninus/portia,SouthStar/portia,sntran/portia,hmilywb/portia,CENDARI/portia,NoisyText/portia,nju520/portia,asa1253/portia,CENDARI/portia,hanicker/portia,NicoloPernigo/portia,Youwotma/portia,livepy/portia,verylasttry/portia,lodow/portia-proxy,flip111/portia,PrasannaVenkadesh/portia,verylasttry/portia,NoisyText/portia,naveenvprakash/portia,anjuncc/portia,chennqqi/portia,SouthStar/portia,pombredanne/portia,NicoloPernigo/portia,anjuncc/portia,asa1253/portia,asa1253/portia,amikey/portia,chennqqi/portia,sntran/portia,asa1253/portia,SouthStar/portia,flip111/portia,CENDARI/portia,NicoloPernigo/portia,livepy/portia,sntran/portia,NicoloPernigo/portia,hmilywb/portia,chennqqi/portia,Youwotma/portia,naveenvprakash/portia,NoisyText/portia,Suninus/portia,naveenvprakash/portia,hanicker/portia,hanicker/portia,nju520/portia,flip111/portia