docs: add Neodyme audit report and update security page link

- Add Neodyme_Report.pdf to public/audits/ directory
- Update security-audits.mdx to link to the actual audit PDF instead of placeholder

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: bernatfp

content/security-audits.mdx

@@ -23,7 +23,7 @@ have been independently audited by [Neodyme](https://neodyme.io/en/), a leading
 blockchain security firm.
 
 - **Fogo Modifications Audit by Neodyme**:
-  [View Audit Report](https://brasa.finance/audits/neodyme-fogo-modifications.pdf)
+  [View Audit Report](/audits/Neodyme_Report.pdf)
 - **SPL Stake Pool Audit by Neodyme (2023)**:
   [View Audit Report](https://github.com/anza-xyz/security-audits/blob/master/spl/NeodymeStakePoolAudit-2023-11-14.pdf)