Add missing word to privately-reporting-a-security-vulnerability.md (#51039)

Author: mchammer01

content/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability.md

@@ -34,7 +34,7 @@ Private vulnerability reporting makes it easy for security researchers to report
 For security researchers, the benefits of using private vulnerability reporting are:
 - Less frustration, and less time spent trying to figure out how to contact the maintainer.
 - A smoother process for disclosing and discussing vulnerability details.
-- The opportunity to discuss vulnerability details privately with repository maintainer.
+- The opportunity to discuss vulnerability details privately with the repository maintainer.
 
 {% data reusables.security-advisory.private-vulnerability-reporting-disabled %}