docs: add explorer example for advanced `sortFn` (#564)

Sidney

2023-12-28 e1b6a0014cabf07ddc7e7931912aece471959224

 quartz/components/styles/graph.scss

@@ -43,7 +43,6 @@
    width: 100vw;
    height: 100%;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: none;
    overflow: hidden;