fix chapter15 bug

code/chapter15/Helloagents-AI-Town/SETUP_GUIDE.md

@@ -108,7 +108,7 @@ python main.py
 
 1. 启动Godot
 2. 点击"导入"
-3. 选择 `chapter15/Game/project.godot`
+3. 选择 `Helloagents-AI-Town/helloagents-ai-town/scenes/main.tscn`
 4. 点击"导入并编辑"
 
 ### 步骤7: 运行游戏

docs/chapter15/Chapter15-Building-Cyber-Town.md

@@ -129,7 +129,7 @@ After successful startup, you will see the following output:
 
 Godot installation is very simple. Windows provides a direct `.exe` file, and Mac also provides a `.dmg` file. You can download directly from the official website ([Windows](https://godotengine.org/download/windows/) / [Mac](https://godotengine.org/download/macos/))
 
-Open the Godot engine, click the "Import" button, browse to `Helloagents-AI-Town/helloagents-ai-town/project.godot`, and click "Import and Edit". After Godot imports the resources, press `F5` or click the "Run" button to start the game.
+Open the Godot engine, click the "Import" button, browse to `Helloagents-AI-Town/helloagents-ai-town/scenes/main.tscn`, and click "Import and Edit". After Godot imports the resources, press `F5` or click the "Run" button to start the game.
 
 **Experience Core Features:**
 

docs/chapter15/第十五章 构建赛博小镇.md

@@ -130,7 +130,7 @@ python main.py
 
 Godot 的安装非常简单，Windows 提供了直接打开的`.exe`文件，Mac 也提供了`.dmg`文件。可直接在官网下载([Windows](https://godotengine.org/download/windows/) / [Mac](https://godotengine.org/download/macos/))
 
-打开 Godot 引擎，点击"导入"按钮，浏览到`Helloagents-AI-Town/helloagents-ai-town/project.godot`，点击"导入并编辑"。等待 Godot 导入资源后，按`F5`或点击"运行"按钮启动游戏。
+打开 Godot 引擎，点击"导入"按钮，浏览到`Helloagents-AI-Town/helloagents-ai-town/scenes/main.tscn`，点击"导入并编辑"。等待 Godot 导入资源后，按`F5`或点击"运行"按钮启动游戏。
 
 <strong>体验核心功能：</strong>