MCP Client Tutorial - Improve steps for Windows (modelcontextprotocol#1508)

* MCP Client Tutorial - add instructions for windows

* Change ni to new-item & add to Node steps

* Changed inlining commands to a CodeGroup

* Revert the redundant change for Node

---------

Co-authored-by: Alex Akimov <[email protected]>

Author: a-akimov

docs/docs/develop/build-client.mdx

@@ -24,7 +24,9 @@ Before starting, ensure your system meets these requirements:
 
 First, create a new Python project with `uv`:
 
-```bash
+<CodeGroup>
+
+```bash macOS/Linux
 # Create project directory
 uv init mcp-client
 cd mcp-client
@@ -33,39 +35,49 @@ cd mcp-client
 uv venv
 
 # Activate virtual environment
-# On Windows:
-.venv\Scripts\activate
-# On Unix or macOS:
 source .venv/bin/activate
 
 # Install required packages
 uv add mcp anthropic python-dotenv
 
 # Remove boilerplate files
-# On Windows:
-del main.py
-# On Unix or macOS:
 rm main.py
 
 # Create our main file
 touch client.py
 ```
 
-## Setting Up Your API Key
+```powershell Windows
+# Create project directory
+uv init mcp-client
+cd mcp-client
 
-You'll need an Anthropic API key from the [Anthropic Console](https://console.anthropic.com/settings/keys).
+# Create virtual environment
+uv venv
 
-Create a `.env` file to store it:
+# Activate virtual environment
+.venv\Scripts\activate
 
-```bash
-# Create .env file
-touch .env
+# Install required packages
+uv add mcp anthropic python-dotenv
+
+# Remove boilerplate files
+del main.py
+
+# Create our main file
+new-item client.py
 ```
 
-Add your key to the `.env` file:
+</CodeGroup>
+
+## Setting Up Your API Key
+
+You'll need an Anthropic API key from the [Anthropic Console](https://console.anthropic.com/settings/keys).
+
+Create a `.env` file to store it:
 
 ```bash
-ANTHROPIC_API_KEY=<your key here>
+echo "ANTHROPIC_API_KEY=<your key here>" > .env
 ```
 
 Add `.env` to your `.gitignore`: