Fix wrong comment on enableAsyncWorkflowConsumption dynamic config

[taylanisikdemir]

What changed?
Key name should have been worker.enableAsyncWorkflowConsumption but was system.enableAsyncWorkflowConsumption.

[coveralls]

Pull Request Test Coverage Report for Build 018f3a1f-73b3-43a5-bfd7-bf52dcb292f1

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 59 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.02%) to 68.083%

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Files with Coverage Reduction	New Missed Lines	%
service/matching/taskReader.go	2	83.55%
common/task/parallel_task_processor.go	2	93.06%
common/util.go	2	91.78%
service/matching/matcher.go	2	91.41%
service/history/execution/mutable_state_util.go	2	78.52%
common/persistence/historyManager.go	2	66.67%
common/task/weighted_round_robin_task_scheduler.go	3	87.06%
common/persistence/statsComputer.go	3	96.07%
service/history/task/fetcher.go	4	85.05%
service/history/execution/mutable_state_task_refresher.go	17	56.65%

Totals
Change from base Build 018f3600-6fcf-45e7-b48b-9de2fc42208d:	-0.02%
Covered Lines:	99982
Relevant Lines:	146853

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💛 - Coveralls