cannot render loop logic diagram correctly

[luojunhui1]

here is the diagram:

graph TD
    A[contextSnippetsBlock函数] --> B[接收autocompleteContext字符串]
    B --> C[按行分割]
    C --> D[逐行处理]
    
    D --> E{匹配headerRegex?}
    E -->|是| F[提取文件名]
    F --> G[添加INSTINCT_CONTEXT_FILE_TOKEN]
    E -->|否| H[检查前一行为header?]
    
    H -->|是| I[添加INSTINCT_SNIPPET_TOKEN]
    I --> J[添加当前行内容]
    H -->|否| K[直接添加当前行]
    
    G --> L[继续下一行]
    J --> L
    K --> L
    
    L --> M[所有行处理完毕?]
    M -->|否| D
    M -->|是| N[连接所有行并返回]

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here is the rendered svg:

these lines direction is not natural