fix link to minrk's fork
fix link to minrk's fork

domitry/iruby,SciRuby/iruby,zalt50/iruby,Sharpie/iruby,zalt50/iruby,SciRuby/iruby,Rambatino/pi-ruby,zalt50/iruby,hainesr/iruby,hainesr/iruby,astroboxio/iruby,jjn2009/iruby,Sharpie/iruby,mijoharas/iruby,jjn2009/iruby,mijoharas/iruby,domitry/iruby,astroboxio/iruby,SciRuby/iruby,minrk/iruby,SciRuby/iruby,zalt50/iruby,minrk/iruby,minrk/iruby,Rambatino/pi-ruby