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

Niklas Schröder

2023-11-07 2a6b9a9ea01e8e6a80fe51d01dc865595b67a612

 quartz/components/styles/popover.scss

@@ -43,7 +43,9 @@

  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;

  @media all and (max-width: $mobileBreakpoint) {
    display: none !important;