Fix credential stuffing rule link (#30499)

Author: janine-c

content/en/security/application_security/how-it-works/threat-intelligence.md

@@ -57,7 +57,7 @@ Under `@threat_intel.results` you can always see the full details of what was ma
 [3]: /security/threat_intelligence/#threat-intelligence-facets
 [4]: https://app.datadoghq.com/reference-tables/create
 [5]: https://app.datadoghq.com/security/configuration/threat-intel
-[6]: https://app.datadoghq.com/security/configuration/asm/rules/edit/kdb-irk-nua?product=appsec
+[6]: https://app.datadoghq.com/security/appsec/detection-rules?query=type%3Aapplication_security%20defaultRuleId%3Adef-000-yk4
 [7]: /security/threat_intelligence#threat-intelligence-categories
 [8]: /security/threat_intelligence#threat-intelligence-intents
 [9]: https://app.datadoghq.com/security/appsec/traces