fix(react): Fix react tracing example (#13152)

Author: mydea

platform-includes/performance/configure-sample-rate/javascript.react.mdx

@@ -1,5 +1,4 @@
 ```javascript
-import { createBrowserRouter } from "react-router-dom";
 import * as Sentry from "@sentry/react";
 
 Sentry.init({
@@ -14,13 +13,6 @@ Sentry.init({
     // Or, if you are using react router, use the appropriate integration
     // See docs for support for different versions of react router
     // https://docs.sentry.io/platforms/javascript/guides/react/configuration/integrations/react-router/
-    Sentry.reactRouterV6BrowserTracingIntegration({
-      useEffect: React.useEffect,
-      useLocation,
-      useNavigationType,
-      createRoutesFromChildren,
-      matchRoutes,
-    }),
   ],
 
   // For finer control of sent transactions you can adjust this value, or
@@ -31,3 +23,8 @@ Sentry.init({
   tracePropagationTargets: ["localhost", /^https:\/\/yourserver\.io\/api/],
 });
 ```
+
+<Alert>
+  See [React Router](/platforms/javascript/guides/react/features/react-router/)
+  for more information on how to configure tracing with React Router.
+</Alert>