Refine the title for ch02

Signed-off-by: Sefank <12670778+Sefank@users.noreply.github.com>

src/SUMMARY.md

@@ -11,7 +11,7 @@
     - [Hello, World!](ch01-02-hello-world.md)
     - [Hello, Cargo!](ch01-03-hello-cargo.md)
 
-- [猜猜看游戏教程](ch02-00-guessing-game-tutorial.md)
+- [写个猜数字游戏](ch02-00-guessing-game-tutorial.md)
 
 - [常见编程概念](ch03-00-common-programming-concepts.md)
     - [变量与可变性](ch03-01-variables-and-mutability.md)

src/ch02-00-guessing-game-tutorial.md

@@ -1,4 +1,4 @@
-# 编写 猜猜看 游戏
+# 写个猜数字游戏
 
 > [ch02-00-guessing-game-tutorial.md](https://github.com/rust-lang/book/blob/main/src/ch02-00-guessing-game-tutorial.md) > <br>
 > commit d68d96576b705fcff7aa6341a9840f4de3c0ca0c