[doc]Update vite config

docs/site/vite.config.ts

@@ -1,5 +1,5 @@
 import { sveltekit } from '@sveltejs/kit/vite';
-import { defineConfig, type Plugin } from 'vite';
+import { defineConfig } from 'vite';
 import md from 'rollup-plugin-md-ts';
 
 export default defineConfig({
@@ -8,7 +8,7 @@ export default defineConfig({
 		md({
 			marked: {},
 			include: ['../mds/**/*.md', './src/pages/guide/**/*.md', '../../packages/**/*.md']
-		}) as Plugin
+		})
 	],
 	server: { hmr: true, host: '0.0.0.0', port: 5555 }
 });