fixed comments

Author: pranjalisr

src/sw.js

@@ -51,8 +51,8 @@ self.addEventListener("install", (event) => {
 });
 self.addEventListener("activate", (event) => {
   event.waitUntil(
-    // clean up those who are not listed in manifestURLs
     caches.open(cacheName).then((cache) =>
+      // clean up those who are not listed in manifestURLs
       cache.keys().then((keys) => {
         for (const request of keys) {
           if (!manifestURLs.includes(request.url)) {