docs(platform): 开源主页 - 更新仓库入口与界面预览

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
   - name: 私密安全报告
-    url: https://github.com/ddcat666/open-ai-canvas/security/advisories/new
+    url: https://github.com/ddcat-ai/open-ai-canvas/security/advisories/new
     about: 请勿在公开 Issue 中披露未修复漏洞