docs: fix explorer example (#483)

Ben Schlegel

2023-09-18 0d3cf2922618774fc397dca8cb92fcf76fb0db02

 quartz/components/styles/explorer.scss

@@ -131,3 +131,12 @@
.folder-icon:hover {
  color: var(--tertiary);
}

.no-background::after {
  background: none !important;
}

#explorer-end {
  // needs height so IntersectionObserver gets triggered
  height: 1px;
}