feat: div that encapsulate PageList component (#750)

* feat: div that encapsulate PageList component

* change class to follow review

Co-authored-by: Jacky Zhao <j.zhao2k19@gmail.com>

* apply page-listing div to TagContent

---------

Co-authored-by: Jacky Zhao <j.zhao2k19@gmail.com>

quartz/components/pages/FolderContent.tsx

@@ -50,11 +50,13 @@ export default ((opts?: Partial<FolderContentOptions>) => {
         <article>
           <p>{content}</p>
         </article>
-        {options.showFolderCount && (
-          <p>{pluralize(allPagesInFolder.length, "item")} under this folder.</p>
-        )}
-        <div>
-          <PageList {...listProps} />
+        <div class="page-listing">
+          {options.showFolderCount && (
+            <p>{pluralize(allPagesInFolder.length, "item")} under this folder.</p>
+          )}
+          <div>
+            <PageList {...listProps} />
+          </div>
         </div>
       </div>
     )