fix: dont show index page for folder in its own listing

Jacky Zhao

2023-08-20 ca17af4ae20b9310da52a3752b8d7744c932f3e2

 quartz/styles/base.scss

@@ -320,7 +320,6 @@
  border-radius: 5px;
  overflow-x: auto;
  border: 1px solid var(--lightgray);
  position: relative;

  &:has(> code.mermaid) {
    border: none;