fix IndexedDB link - markdown doesn't like MSDN links
fix IndexedDB link - markdown doesn't like MSDN links

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