docs: Add second stake pool audit by Neodyme (#3945)

Author: joncinque

docs/src/stake-pool.md

@@ -37,10 +37,13 @@ chronological order, and the commit hash that each was reviewed at:
 * Quantstamp
     - Initial review commit hash [`99914c9`](https://github.com/solana-labs/solana-program-library/tree/99914c9fc7246b22ef04416586ab1722c89576de)
     - Re-review commit hash [`3b48fa0`](https://github.com/solana-labs/solana-program-library/tree/3b48fa09d38d1b66ffb4fef186b606f1bc4fdb31)
-    - Final report https://solana.com/SolanaQuantstampStakePoolAudit.pdf
+    - Final report https://github.com/solana-labs/security-audits/blob/master/spl/QuantstampStakePoolAudit.pdf
 * Neodyme
     - Review commit hash [`0a85a9a`](https://github.com/solana-labs/solana-program-library/tree/0a85a9a533795b6338ea144e433893c6c0056210)
-    - Report https://solana.com/SolanaNeodymeStakePoolAudit.pdf
+    - Report https://github.com/solana-labs/security-audits/blob/master/spl/NeodymeStakePoolAudit.pdf
 * Kudelski
     - Review commit hash [`3dd6767`](https://github.com/solana-labs/solana-program-library/tree/3dd67672974f92d3b648bb50ee74f4747a5f8973)
-    - Report https://solana.com/SolanaKudelskiStakePoolAudit.pdf
+    - Report https://github.com/solana-labs/security-audits/blob/master/spl/KudelskiStakePoolAudit.pdf
+* Neodyme Second Audit
+    - Review commit hash [`fd92ccf`](https://github.com/solana-labs/solana-program-library/tree/fd92ccf9e9308508b719d6e5f36474f57023b0b2)
+    - Report https://github.com/solana-labs/security-audits/blob/master/spl/NeodymeStakePoolAudit2.pdf