Fixed typo in run manager validation routine.
Fixed typo in run manager validation routine.

marmbrus/rain-workload-toolkit,mrcaps/rain-workload-toolkit,yungsters/rain-workload-toolkit,yungsters/rain-workload-toolkit,marmbrus/rain-workload-toolkit,sguazt/rain-workload-toolkit,mrcaps/rain-workload-toolkit,sguazt/rain-workload-toolkit,yungsters/rain-workload-toolkit,mrcaps/rain-workload-toolkit,marmbrus/rain-workload-toolkit,sguazt/rain-workload-toolkit