[ServiceWorker] Correct ServiceWorkerRegistration's update() Web IDL w3c/ServiceWorker@0a2f29f

＋ Editorial: Add a space between following and perform the fetch hook
w3c/ServiceWorker@479b8ae

Author: triple-underscore

service-workers-ja.html

@@ -254,8 +254,8 @@
 
 ●●options
 
-spec_date:2025-03-21
-trans_update:2025-02-21
+spec_date:2025-05-01
+trans_update:2025-05-02
 source_checked:240222
 original_url:https://w3c.github.io/ServiceWorker/
 	abbr_url:SW1
@@ -3913,7 +3913,7 @@ <h3>3.2. `ServiceWorkerRegistration^I</h3>
   readonly attribute `USVString$ `scope$m;
   readonly attribute `ServiceWorkerUpdateViaCache$I `updateViaCache$m;
 
-  [`NewObject$] `Promise$&lt;`undefined$&gt; `update$m();
+  [`NewObject$] `Promise$&lt;`ServiceWorkerRegistration$I&gt; `update$m();
   [`NewObject$] `Promise$&lt;`boolean$&gt; `unregister$m();
 
   // event
@@ -10450,7 +10450,7 @@ <h4 id="importscripts-method">6.3.2. `importScripts(urls)^n</h4>
 %urls,
 次に定義される（`~fetch~hookを遂行する~algo$を成す）手続き
 ◎
-When the importScripts(urls) method is called on a ServiceWorkerGlobalScope object, the user agent must import scripts into worker global scope, given this ServiceWorkerGlobalScope object and urls, and with the followingperform the fetch hook steps,＼
+When the importScripts(urls) method is called on a ServiceWorkerGlobalScope object, the user agent must import scripts into worker global scope, given this ServiceWorkerGlobalScope object and urls, and with the following perform the fetch hook steps,＼
 </p>
 
 <div class="algo">