workloads/rt-app: Removed absoulte path in documentation
workloads/rt-app: Removed absoulte path in documentation

Removed dynamically populated existing configs path from doc string as
this is also used to generate the online documentation and therefore should
not be an absolute path.

jimboatarm/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation,jimboatarm/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation,bjackman/workload-automation,bjackman/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation