small fix (#591)

Author: adela-bytebase

content/reference/postgres/how-to/postgres-security-best-practices.md

@@ -18,7 +18,7 @@ PostgreSQL powers critical applications worldwide — but insecure deployments r
     - Disable the `trust` method in `pg_hba.conf`, especially in production.
     - Revoke unnecessary privileges from the `public` schema.
 
-## 2. Authentication Best Practices??? better name?
+## 2. Authentication and User Management
 
 **Role and User Management:**