rust

fix: mention Wasmtime C API in C tutorial #306

Job	Run time
build (component-model/examples/example-host)	1m 44s
build (component-model/examples/tutorial/command, component)	12s
build (component-model/examples/tutorial/calculator, component)	8s
build (component-model/examples/tutorial/adder, component)	24s
	2m 28s

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