rust

Revise JavaScript language support section #222

Job	Run time
build (component-model/examples/tutorial/command, component)	1m 5s
build (component-model/examples/example-host)	2m 10s
build (component-model/examples/tutorial/adder, component)	35s
build (component-model/examples/tutorial/calculator, component)	16s
	4m 6s

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