Update README.md to fix examples using FileOutput #587

Job	Run time
test (node, 18.x)	22s
build (20.x)	5s
test (node, 20.x)	21s
test (node, 22.x)	24s
integration-edge (cloudflare-worker, 20.x)	21s
integration-bun (bun, 1.0.11)	15s
integration-browser (browser, chromium, 20.x)	29s
integration-deno (deno, v1.x)	10s
integration-browser (browser, firefox, 20.x)	35s
integration-nextjs (nextjs, 20.x)	25s
integration-browser (browser, webkit, 20.x)	50s
integration-node (commonjs, 18.x)	8s
integration-node (commonjs, 20.x)	7s
integration-node (esm, 18.x)	16s
integration-node (esm, 20.x)	7s
integration-node (typescript, 18.x)	13s
integration-node (typescript, 20.x)	18s
	5m 26s

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