Minor fixes.

Author: sasapopo

articles/azure-sql/managed-instance/managed-instance-link-preparation.md

@@ -17,7 +17,7 @@ ms.date: 03/07/2022
 # Preparation for Azure SQL Managed Instance link
 [!INCLUDE[appliesto-sqlmi](../includes/appliesto-sqlmi.md)]
 
-This article will cover how to prepare for Azure SQL Managed Instance link.
+This article provides details on how to prepare for Azure SQL Managed Instance link.
 
 ## Pre-requirements
 Ensure the following requirements are met prior to setting up the link:
@@ -271,6 +271,15 @@ The result from executing the TNC (Test Network Connection) will be False if no
 
 :::image type="content" source="./media/managed-instance-link-preparation/ssms-output-tnchelper.png" alt-text="Screenshot showing expected output of NetHelper SQL Agent job.":::
 
+Finally, drop the test endpoint and certificate.
+
+```sql
+    DROP ENDPOINT TEST_ENDPOINT
+    GO
+    DROP CERTIFICATE TEST_CERT
+    GO
+```
+
 If the log does not show True, troubleshoot the following:
 - Is firewall on SQL Server host allowing inbound and outbound communication on port 5022?
 - Are Managed Instance NSGs allowing communication on port 5022? If is SQL Server is hosted on Azure SQL VM, are Azure SQL VM NSGs allowing communication on port 5022.