Move comment nearer to its block

_config.ts

@@ -77,10 +77,10 @@ site.use(footnotes());
 
 site.process([".html"], (pages) => {
   pages.forEach((page) => {
+    if (page.document) {
       // NOTE: This is a hack to append a class to JS doctrings so that we
       // can style them. If only the Hightlight.js plugin could be configured
       // to do this instead.
-    if (page.document) {
       for (
         const codeCommentElement of page.document.getElementsByClassName(
           "hljs-comment",