update the readme to reflect packages updates

Author: chrisweb

README.md

@@ -20,15 +20,13 @@ On [chris.lu](https://chris.lu), you will find my tutorials and can learn more a
 
 During the development of the blog, I wrote a ["Next.js static MDX blog" tutorial](https://chris.lu/web-development/tutorials/next-js-static-mdx-blog) that showcases most of the technologies that I used
 
-The framework I used is [Next.js 14](https://github.com/vercel/next.js) with [React 18](https://github.com/facebook/react) (I plan on upgrading to Next.js 15 and React 19 as soon as the first stable versions get released and will update my tutorial accordingly)
+The framework I used is [Next.js 15.x](https://github.com/vercel/next.js) with [React 19.x](https://github.com/facebook/react)
 
-I added [MDX](https://mdxjs.com/) support to be able to create content using next/mdx. I then also used several remark and rehype plugins and even built two myself, [rehype-github-alerts
-](https://github.com/chrisweb/rehype-github-alerts) and [remark-table-of-contents
-](https://github.com/chrisweb/remark-table-of-contents)
+I added [MDX](https://mdxjs.com/) support to be able to create content using **@next/mdx**. I then also used several MDX (remark and rehype) plugins and even built two myself, [rehype-github-alerts](https://github.com/chrisweb/rehype-github-alerts) and [remark-table-of-contents](https://github.com/chrisweb/remark-table-of-contents)
 
 I had a lot of fun doing my [WebGL](https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API) header animation using [react-three-fiber](https://github.com/pmndrs/react-three-fiber) (a React renderer for [three.js](https://github.com/mrdoob/three.js))
 
-I also added a jukebox on top using my [web-audio-api-player](https://github.com/chrisweb/web-audio-api-player) and added a dynamic waveform using my [waveform-visualizer](https://github.com/chrisweb/waveform-visualizer) and [waveform-data-generator](https://github.com/chrisweb/waveform-data-generator) packages
+I also added a jukebox like music player (on the top right) using my [web-audio-api-player](https://github.com/chrisweb/web-audio-api-player) and added a dynamic waveform using my [waveform-visualizer](https://github.com/chrisweb/waveform-visualizer) and [waveform-data-generator](https://github.com/chrisweb/waveform-data-generator) packages
 
 ## Feedback & bug reports