docs: rearrange showcase

Jacky Zhao

2024-01-26 a8e1c4abc2f5a76d0ff0d582b5c1cbfb81ddbe2f

 quartz/styles/base.scss

@@ -356,6 +356,7 @@
    counter-increment: line 0;
    display: grid;
    padding: 0.5rem 0;
    overflow-x: scroll;

    & [data-highlighted-chars] {
      background-color: var(--highlight);