update

index.html

@@ -14,7 +14,7 @@
     // serviceWorker
     if ("serviceWorker" in navigator) {
       navigator.serviceWorker
-        .register("serverWorker.js")
+        .register("serviceWorker.js")
         .then(res => console.log("service worker registered"))
         .catch(err => console.log("service worker not registered", err));
     }