Update documentation to reflect Tailwind v4 installation

- Updated README.md and getting-started.mdx to specify Tailwind v4 instead of the previous version, ensuring clarity for users on the required Tailwind version for installation.

Author: marklundin

packages/blocks/README.md

@@ -8,7 +8,7 @@ A set of beautifully crafted high-level 3D primitives for React, built on @playc
 npm install @playcanvas/blocks playcanvas
 ```
 
-Follow this guide to [Install Tailwind](https://tailwindcss.com/docs/installation)
+Follow this guide to [Install Tailwind v4](https://tailwindcss.com/docs/installation)
 
 And add the following top your css
 

packages/docs/content/blocks/getting-started.mdx

@@ -4,7 +4,7 @@ import { Button } from '@components/ui/button'
 
 # Getting Started
 
-**Blocks** can be installed in any React project with **Tailwind CSS**. You can use them with **Next.js**, **Vite**, or any other React framework.
+**Blocks** can be installed in any React project with **Tailwind v4**. You can use them with **Next.js**, **Vite**, or any other React framework.
 
 You can install them via NPM or shadcn's CLI.
 
@@ -51,7 +51,7 @@ Grab the package from npm, yarn, pnpm or bun.
 
 ### Add Tailwind CSS
 
-PlayCanvas Blocks are built with Tailwind CSS. You'll need to install Tailwind to get started.
+PlayCanvas Blocks are built with Tailwind v4. You'll need to install Tailwind to get started.
 
 Follow the official [Tailwind CSS installation guide](https://tailwindcss.com/docs/installation) for your project.