fix dot syntax generated by graphviz target
fix dot syntax generated by graphviz target

sh0dow/Propel,rozwell/Propel,halfer/Propel,bjdelange/Propel,halfer/Propel,rozwell/Propel,bjdelange/Propel,AriaSystems/Propel,tbl0605/Propel-pervasive,gencer/Propel,Egston/Propel,zachmay/Propel,gencer/Propel,PatidarWeb/Propel,propelorm/Propel,adrianrusnarczyk/Propel,PatidarWeb/Propel,AriaSystems/Propel,Egston/Propel,sh0dow/Propel,mhitza/Propel,propelorm/Propel,mhitza/Propel,adrianrusnarczyk/Propel,zachmay/Propel,tbl0605/Propel-pervasive