Update SECURITY.md

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

Author: LoserCheems

SECURITY.md

@@ -109,4 +109,4 @@ For security-related questions or concerns:
 
 For general support:
 - GitHub Issues: https://github.com/SmallDoges/flash-dmattn/issues
-- Documentation: https://github.com/SmallDoges/flash-dmattn/docs/
+- Documentation: https://github.com/SmallDoges/flash-dmattn/tree/main/docs/