utils/types: fix toggle_set docstring
utils/types: fix toggle_set docstring

The docstring claimed that the toggle_set was "A list that...".

setrofim/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,setrofim/workload-automation,lisatn/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation