Update docs/security/reports.md

Author: kmurphypolygon

docs/security/reports.md

@@ -4,7 +4,7 @@ The following information relates to the latest available (and public) external
 
 ## ISO/IEC 27001:2022 certification
 
-Polygon Labs was awarded ISO 27001 certification in March of 2024
+Polygon Labs was awarded ISO 27001 certification in March of 2024.
 
 ### Certificate 
 https://www.schellman.com/certificate-directory (search for "Polygon Labs")