diff --git a/CONTRIBUTING_en.md b/CONTRIBUTING_en.md
index 5b48329..b0b84b3 100644
--- a/CONTRIBUTING_en.md
+++ b/CONTRIBUTING_en.md
@@ -88,7 +88,7 @@ Your README.md **must** include:
 2. **Project Structure** (mandatory): File tree with descriptions
    ```markdown
    ## 🌳 Project Structure
-   
+
    \`\`\`
    .
    ├── README.md                 # Documentation
diff --git a/CONTRIBUTING_zh.md b/CONTRIBUTING_zh.md
index 0785dcc..8c8d23b 100644
--- a/CONTRIBUTING_zh.md
+++ b/CONTRIBUTING_zh.md
@@ -88,7 +88,7 @@ your_sample_fullstack_runtime/
 2. **项目结构**（强制）：带说明的文件树
    ```markdown
    ## 🌳 项目结构
-   
+
    \`\`\`
    .
    ├── README.md                 # 文档