chore: improve tsdocs of fulfillment provider (#10649) #10

Job	Run time
setup	5m 37s
integration-tests-packages	17m 33s
Shard (0) Module Integration Tests	15m 5s
Shard (0) HTTP Integration Tests	16m 18s
Shard (1) Module Integration Tests	14m 7s
Shard (0) Unit Tests	13m 16s
Shard (1) HTTP Integration Tests	13m 7s
Shard (1) Unit Tests	9m 22s
unit-tests	1s
integration-tests-modules	1s
integration-tests-http	1s
	1h 44m 28s

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