feat(explorer): improve accessibility and consistency (+ bug fix) (#488)

Ben Schlegel

2023-09-20 b029eeadabe0877df6ec11443c68743f1494bc40

 quartz/plugins/transformers/frontmatter.ts

@@ -21,7 +21,7 @@
    name: "FrontMatter",
    markdownPlugins() {
      return [
        remarkFrontmatter,
        [remarkFrontmatter, ["yaml", "toml"]],
        () => {
          return (_, file) => {
            const { data } = matter(file.value, {