docs: fix property name for ToC toggle (#573)

Niklas Schröder

2023-11-07 2a6b9a9ea01e8e6a80fe51d01dc865595b67a612

 quartz/components/styles/legacyToc.scss

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

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