Update CA to one that works

Author: jonels-msft

articles/postgresql/concepts-hyperscale-ssl-connection-security.md

@@ -19,14 +19,14 @@ Likewise, connection strings that are pre-defined in the "Connection Strings" se
 Some application frameworks that use PostgreSQL for their database services do not enable SSL by default during installation. If your PostgreSQL server enforces SSL connections but the application is not configured for SSL, the application may fail to connect to your database server. Consult your application's documentation to learn how to enable SSL connections.
 
 ## Applications that require certificate verification for SSL connectivity
-In some cases, applications require a local certificate file generated from a trusted Certificate Authority (CA) certificate file (.cer) to connect securely. The certificate to connect to an Azure Database for PostgreSQL server is located at https://www.digicert.com/CACerts/BaltimoreCyberTrustRoot.crt.pem. Download the certificate file and save it to your preferred location. 
+In some cases, applications require a local certificate file generated from a trusted Certificate Authority (CA) certificate file (.cer) to connect securely. The certificate to connect to an Azure Database for PostgreSQL - Hyperscale (Citus) is located at https://dl.cacerts.digicert.com/DigiCertGlobalRootCA.crt.pem. Download the certificate file and save it to your preferred location.
 
 ### Connect using psql
 The following example shows how to connect to your Hyperscale (Citus) coordinator node using the psql command-line utility. Use the `sslmode=verify-full` connection string setting to enforce SSL certificate verification. Pass the local certificate file path to the `sslrootcert` parameter.
 
 Below is an example of the psql connection string:
 ```
-psql "sslmode=verify-full sslrootcert=BaltimoreCyberTrustRoot.crt host=mydemoserver.postgres.database.azure.com dbname=citus user=citus password=your_pass"
+psql "sslmode=verify-full sslrootcert=DigiCertGlobalRootCA.crt.pem host=mydemoserver.postgres.database.azure.com dbname=citus user=citus password=your_pass"
 ```
 > [!TIP]
 > Confirm that the value passed to `sslrootcert` matches the file path for the certificate you saved.