fix: mermaid rendering broken after rehype-pretty-code bump (closes #638)

Jacky Zhao

2023-12-19 443cd53a1acf33ac0aaa34e0e75760d3da912d18

 quartz/components/styles/legacyToc.scss

@@ -12,7 +12,7 @@
      margin: 0;
    }
  }
    

  & ul {
    list-style: none;
    margin: 0.5rem 1.25rem;