Correct ssms telemetry opt out keys

The current docs are out of date with the code, I've provided the correct registry keys to opt out of ssms telemetry in v17 and 18.

Author: shueybubbles

docs/sql-server/sql-server-customer-feedback.md

@@ -91,11 +91,11 @@ Enterprise customers can configure Group Policy settings to opt in or out of usa
 > [!NOTE]
 > {Major Version} refers to the version of SQL Server-for example, 140 for SQL Server 2017
 
-- For SQL Server Management Studio:
+- For SQL Server Management Studio 17:
 
-    Subkey = HKEY_CURRENT_USER\Software\Microsoft\Microsoft SQL Server\140
+    Subkey = HKEY_CURRENT_USER\Software\Microsoft\SQL Server Management Studio\14.0
 
-    RegEntry name = CustomerFeedback
+    RegEntry name = UserFeedbackOptIn
 
     Entry type DWORD: 0 is opt out; 1 is opt in
 
@@ -109,6 +109,13 @@ Enterprise customers can configure Group Policy settings to opt in or out of usa
 
     Registry-based Group Policy on these registry subkeys is honored by SQL Server 2017 usage data collection.
 
+- For SQL Server Management Studio 18:
+    
+    Subkey = HKEY_CURRENT_USER\Software\Microsoft\SQL Server Management Studio\18.0_IsoShell
+
+    RegEntry name = UserFeedbackOptIn
+
+    Entry type DWORD: 0 is opt out; 1 is opt in
 ## Set registry subkeys for crash dump collection
 
 Similar to the behavior in an earlier version of SQL Server, SQL Server 2017 Enterprise customers can configure Group Policy settings on the server to opt in or out of crash dump collection. This is done by configuring a registry-based policy. The relevant registry subkeys and settings are as follows: