Update _index.md (#31054)

Author: maycmlee

content/en/security/cloud_siem/detection_rules/_index.md

@@ -40,7 +40,7 @@ further_reading:
 
 ## Overview
 
-Cloud SIEM detection rules analyze logs, Audit Trail events, and events from Event Management to generate security signals when threats are detected. You can use [out-of-the-box detections rules](#out-of-the-box-detection-rules) or [create custom detection rules](#custom-detection-rules). This document walks you through how to create a custom detection rule.
+Cloud SIEM detection rules analyze logs, Audit Trail events, and events from Event Management to generate security signals when threats are detected. You can use [out-of-the-box detection rules](#out-of-the-box-detection-rules) or [create custom detection rules](#custom-detection-rules). This document walks you through how to create a custom detection rule.
 
 ### Out-of-the-box detection rules
 
@@ -440,4 +440,4 @@ The rule deprecation process is as follows:
 [3]: https://app.datadoghq.com/logs/
 [4]: https://app.datadoghq.com/security/rules
 [5]: /security/cloud_siem/historical_jobs/
-[6]: /security/default_rules/?category=cat-cloud-siem-log-detection#all
+[6]: /security/default_rules/?category=cat-cloud-siem-log-detection#all