Refactor service worker cache array for improved readability by consolidating URL entries into a single line.

static/sw.js

@@ -1,10 +1,6 @@
 /* eslint-env serviceworker */
 const CACHE_NAME = 'quad4-linking-tool-v1';
-const urlsToCache = [
-	'/',
-	'/favicon.svg',
-	'/manifest.json',
-];
+const urlsToCache = ['/', '/favicon.svg', '/manifest.json'];
 
 self.addEventListener('install', (event) => {
 	event.waitUntil(