minor fix

Author: Blargian

docs/cloud/guides/security/data_masking.md

@@ -9,6 +9,7 @@ keywords: ['data masking']
 # Data masking in ClickHouse
 
 Data masking is a technique used for data protection, in which the original data is replaced with a version of the data which maintains its format and structure while removing any personally identifiable information (PII) or sensitive information.
+
 This guide shows you how you can mask data in ClickHouse.
 
 ## Use string replacement functions {#using-string-functions}