chore: update SECURITY.md

Author: harbournick

.github/ISSUE_TEMPLATE/config.yml

@@ -4,6 +4,3 @@ contact_links:
   - name: 💬 Join our Discord
     url: https://discord.gg/<YOUR_INVITE_CODE>
     about: Have a question, need help, or want to chat? Join our community Discord.
-  - name: 🔐 Report a security vulnerability
-    url: https://github.com/@harbour-enterprises/superdoc/security/policy
-    about: Please follow our security policy.