mermaid安装插件：使用前需要在 Markdown 文件开头加入：_posts/xxx.md---mermaid: true---演示效果代码示例graph LR A(Section A) -->|option 1| B(Section A) B -->|option 2| C(Section C)gitGraph commit commit branch develop commit commit commit checkout main commit commithttps://mermaid.js.org/intro/https://mermaid.js.org/intro/