完善 mdx 文件处理，修复代码高亮问题

src/app/(home)/help/tutorials/quick-start/page.tsx

@@ -1,11 +1,8 @@
 'use client'
 import QuickStart from '@/components/docs/quick-start.mdx'
-import Markdown from '@/components/markdown'
 
 export default function CollectPage() {
   return (
-    <Markdown>
-      <QuickStart/>
-    </Markdown>
+    <QuickStart/>
   )
 }

src/app/globals.css

@@ -1,8 +1,9 @@
 @import "tailwindcss";
-
 @plugin "tailwindcss-animate";
 @plugin "@tailwindcss/typography";
 
+@import 'highlight.js/styles/a11y-dark.css';
+
 :root {
   --idle: oklch(1 0 0);
   --idle-muted: oklch(0.965 0 0);
@@ -153,3 +154,8 @@
     @apply font-normal;
   }
 }
+
+pre code.hljs {
+    background: inherit;
+    padding: 0;
+}