Update backend address

snippets-frontend/app/page.tsx

@@ -4,7 +4,7 @@ import {FormEvent, useState} from 'react'
 import {ArrowUpRight, Check, Copy, FileCode2, Loader2, Send, Terminal, X} from 'lucide-react'
 import {languageLabel, rawSnippetUrl, SnippetEditor, snippetUrl} from '@/components/snippet-editor'
 
-const API_BASE = 'http://127.0.0.1:6868'
+const API_BASE = 'https://snippets.rtast.cn'
 
 async function copyToClipboard(text: string) {
     if (navigator.clipboard && window.isSecureContext) {