specs/spark: Fix QUILT_PATH documentation
specs/spark: Fix QUILT_PATH documentation

tejasmanohar/quilt,quilt/quilt,kayousterhout/quilt,LuiseV/quilt,LuiseV/quilt,NetSys/quilt,kayousterhout/quilt,akshayknarayan/quilt,ejj/quilt-dev,mmussomele/quilt,quilt/quilt,tejasmanohar/quilt,secant/quilt,kelda/kelda,ZhongtianWang/quilt,kklin/kelda,kklin/quilt,quilt/quilt,NetSys/quilt,secant/quilt,PenguinToast/quilt,tejasmanohar/quilt,mmussomele/quilt,NetSys/quilt,ZhongtianWang/quilt,akshayknarayan/quilt,PenguinToast/quilt,kklin/quilt,kelda/kelda,PenguinToast/quilt,ejj/quilt-dev,LuiseV/quilt,kelda/kelda,secant/quilt,NetSys/quilt,kklin/quilt,mmussomele/quilt,LuiseV/quilt,kayousterhout/quilt,akshayknarayan/quilt,secant/quilt,mmussomele/quilt,ZhongtianWang/quilt,akshayknarayan/quilt,quilt/quilt,stevenlin598/quilt,stevenlin598/quilt,LuiseV/quilt,ejj/quilt-dev,kklin/kelda,PenguinToast/quilt,ZhongtianWang/quilt,mmussomele/quilt,mmussomele/quilt,ejj/quilt-dev,secant/quilt,kklin/kelda,stevenlin598/quilt,kayousterhout/quilt,kelda/kelda,stevenlin598/quilt,tejasmanohar/quilt,NetSys/quilt,kklin/quilt,stevenlin598/quilt,kklin/kelda,stevenlin598/quilt,PenguinToast/quilt