Update ch02-00-guessing-game-tutorial.md

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@ -329,7 +329,7 @@ $ cargo update
```toml
[dependencies]
rand = "0.6.0"
rand = "0.9.0"
```
下一次运行 `cargo build`Cargo 会从 registry 更新可用的 crate并根据你指定的新版本重新计算。