Fix references to the steps of Handle Fetch in respondWith
Fix references to the steps of Handle Fetch in respondWith

zuzusik/ServiceWorker,karolklp/ServiceWorker,mkruisselbrink/ServiceWorker,slightlyoff/ServiceWorker,zuzusik/ServiceWorker,chadoliver/ServiceWorker,chadoliver/ServiceWorker,slightlyoff/ServiceWorker,chadoliver/ServiceWorker,martinthomson/ServiceWorker,mkruisselbrink/ServiceWorker,karolklp/ServiceWorker,karolklp/ServiceWorker,justinleoye/ServiceWorker,zuzusik/ServiceWorker,martinthomson/ServiceWorker,justinleoye/ServiceWorker,martinthomson/ServiceWorker,justinleoye/ServiceWorker