Fix link to states example #56826

Job	Run time
ci	2m 39s
build (windows-latest)	10m 10s
miri	13m 31s
toml	2m 1s
check-bevy-internal-imports	7s
check-doc	10m 24s
build (ubuntu-latest)	5m 51s
check-missing-examples-in-docs	30s
build (macos-latest)	6m 11s
run-examples-macos-metal	6m 6s
typos	9s
check-missing-features-in-docs	35s
markdownlint	1m 4s
check-compiles-no-std	1m 38s
check-compiles	6m 31s
msrv	1m 12s
build-wasm-atomics	1m 40s
build-wasm	1m 8s
	1h 11m 27s

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