demo: fix types

demo/nextjs/app/dashboard/user-card.tsx

@@ -350,8 +350,8 @@ export default function UserCard(props: {
 						setIsSignOut(true);
 						await signOut({
 							fetchOptions: {
-								body: {
-									callbackURL: "/",
+								onSuccess() {
+									router.push("/");
 								},
 							},
 						});

demo/nextjs/lib/auth.ts

@@ -3,7 +3,6 @@ import {
 	bearer,
 	organization,
 	passkey,
-	phoneNumber,
 	twoFactor,
 	admin,
 } from "better-auth/plugins";