fix: wikilinks should allow external links (closes #639)

Jacky Zhao

2023-12-19 b44a79eebaf1664512ef5ff4e3246b3a6a416ff4

 quartz/components/styles/legacyToc.scss

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

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