doc: Fix instrument documentation
doc: Fix instrument documentation

Fixed outdated `update_results` method references.

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