fix: fix style import

Author: wzhudev

docs/app/layout.tsx

@@ -3,7 +3,6 @@ import { Footer, Layout, Navbar } from 'nextra-theme-docs';
 import { Head } from 'nextra/components';
 import { getPageMap } from 'nextra/page-map';
 import 'nextra-theme-docs/style.css';
-import '../styles.css';
 
 export const metadata = {
   title: {