ServiceWorker

87a6de9c - Editorial: Correct grammar of informative note (#1145)

Editorial: Correct grammar of informative note (#1145) * Editorial: Correct grammar of informative note * fixup! Improve note - following up on https://github.com/w3c/ServiceWorker/commit/ddc7c646c629fab90c6b3373050c438c9b8ee2e4