fix: `cssclasses` was not applied on folder note (index) (#749)

Mara-Li

2024-01-29 16adbd30114bfcc1aaefa851a5a1786787f97a10

 quartz/cli/handlers.js

@@ -347,7 +347,7 @@
          directoryListing: false,
          headers: [
            {
              source: "**/*.html",
              source: "**/*.*",
              headers: [{ key: "Content-Disposition", value: "inline" }],
            },
          ],