Update app/components/Contribute.tsx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: Crokily

app/components/Contribute.tsx

@@ -23,7 +23,7 @@ import { buildDocsNewUrl } from "@/lib/github";
 
 type DirNode = { name: string; path: string; children?: DirNode[] };
 
-const FILENAME_PATTERN = /^[A-Za-z0-9][A-Za-z0-9_-]*$/;
+const FILENAME_PATTERN = /^[A-Za-z0-9][A-Za-z0-9_-]+$/;
 
 // 统一调用工具函数生成 GitHub 新建链接，路径规则与 Edit 按钮一致
 function buildGithubNewUrl(dirPath: string, filename: string, title: string) {