[Rule Tuning] Elastic Security External Alerts (#4962)

(cherry picked from commit 215cdf0)

Author: Mikaayenson

rules/promotions/elastic_security_external_alerts.toml

@@ -5,7 +5,7 @@ maturity = "production"
 promotion = true
 min_stack_version = "8.18.0"
 min_stack_comments = "Introduced support for Elastic Security alert promotion"
-updated_date = "2025/08/04"
+updated_date = "2025/08/05"
 
 [rule]
 author = ["Elastic"]
@@ -56,7 +56,7 @@ The Elastic Security integration facilitates transferring security alert data fr
 references = ["https://docs.elastic.co/en/integrations/elastic_security"]
 risk_score = 47
 rule_id = "720fc1aa-e195-4a1d-81d8-04edfe5313ed"
-rule_name_override = "rule.name"
+rule_name_override = "kibana.alert.rule.name"
 setup = """## Setup
 
 ### Elastic Security Alert Integration