Fix broken code in examples

Author: martinml

EXAMPLES.md

@@ -526,7 +526,7 @@ To work around this, you can pass a thin wrapper over the native `fetch()` so th
 const { createFetcher } = useAuth0();
 
 const fetcher = createFetcher({
-  fetch: (request) => signal: AbortSignal.timeout(2000),
+  fetch: (request) => fetch(request, { signal: AbortSignal.timeout(2000) })
 });
 
 await fetcher.fetchWithAuth('https://api.example.com/foo');