docs(quickstart): fix quickstart guide for server node

[tresorama]

Fixes #252 . But please check it.

Motivation and Context

See #252 for error.
I don't know the code of thi repo, I only followed the Typecript type definition of McpServer and refactored

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

const NWS_API_BASE = "https://api.weather.gov";
const USER_AGENT = "weather-app/1.0";

// Create server instance
- const server = new McpServer({
-  name: "weather",
-  version: "1.0.0",
-  capabilities: {
-    resources: {},
-    tools: {},
-  },
- });

+ const server = new McpServer({
+  name: "weather",
+  version: "1.0.0",
+ },{
+  capabilities: {
+    resources: {},
+    tools: {},
+  },
+ });

I supposed the docs is not updated after an APIchange.

How Has This Been Tested?

Not deeply. But Claude can now use the tool correctly.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context