fix: Format McpInstallNavbarItem.js with Prettier

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: scalvert

examples/basic-docs/src/theme/NavbarItem/McpInstallNavbarItem.js

@@ -2,10 +2,5 @@ import React from 'react';
 import { McpInstallButton } from 'docusaurus-plugin-mcp-server/theme';
 
 export default function McpInstallNavbarItem() {
-  return (
-    <McpInstallButton
-      serverUrl="https://example.com/mcp"
-      serverName="example-docs"
-    />
-  );
+  return <McpInstallButton serverUrl="https://example.com/mcp" serverName="example-docs" />;
 }