Update Readme (React-ga4 clarification)

examples/with-react-ga4/README.md

@@ -1,4 +1,6 @@
-# React-GA example
+# React-GA4 example
+
+As of this change, [React-GA](https://github.com/react-ga/react-ga ) uses Universal Analytics which will be deprecated in July 1, 2023. Until this is fixed, this example has been updated to use the `React-GA4` library.
 
 This example shows the most basic way to use [react-ga4](https://github.com/codler/react-ga4) using custom [App](https://github.com/vercel/next.js#custom-app)
 component with NextJs. Modify `Tracking ID` in `utils/analytics.js` file for testing this example.
@@ -14,15 +16,15 @@ Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_mediu
 Execute [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app) with [npm](https://docs.npmjs.com/cli/init), [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/), or [pnpm](https://pnpm.io) to bootstrap the example:
 
 ```bash
-npx create-next-app --example with-react-ga with-react-ga-app
+npx create-next-app --example with-react-ga4 with-react-ga-app
 ```
 
 ```bash
-yarn create next-app --example with-react-ga with-react-ga-app
+yarn create next-app --example with-react-ga4 with-react-ga-app
 ```
 
 ```bash
-pnpm create next-app --example with-react-ga with-react-ga-app
+pnpm create next-app --example with-react-ga4 with-react-ga-app
 ```
 
 Deploy it to the cloud with [Vercel](https://vercel.com/new?utm_source=github&utm_medium=readme&utm_campaign=next-example) ([Documentation](https://nextjs.org/docs/deployment)).