Fix links.

Author: Lauragra

docs/submit-apps-for-office-365-operated-by-21vianet-in-china.md

@@ -17,7 +17,7 @@ A SharePoint Add-in that requires OAuth authentication uses OAuth client ID and
 The client ID and client secret providers in China are different from the providers for the rest of the world. The client ID and client secret providers in China are hosted in different data centers from the providers for the rest of the world. The Seller Dashboard has the capability to create client ID and client secret for the China data center and for the global data center.
 
 
->**Note:**  For more information about OAuth, see  [Authorization and authentication of SharePoint Add-ins](http://msdn.microsoft.com/library/authorization-and-authentication-of-sharepoint-add-ins%28Office.15%29.aspx) and [Context Token OAuth flow for SharePoint Add-ins](http://msdn.microsoft.com/library/context-token-oauth-flow-for-sharepoint-add-ins%28Office.15%29.aspx).
+>**Note:**  For more information about OAuth, see  [Authorization and authentication of SharePoint Add-ins](https://msdn.microsoft.com/EN-US/library/fp142384.aspx) and [Context Token OAuth flow for SharePoint Add-ins](https://msdn.microsoft.com/en-us/library/office/fp142382.aspx).
  
 
 Because your SharePoint Add-in that requires OAuth authentication has to be associated with a client ID and client secret, you will need to submit an additional copy of your add-in if you wish to distribute your add-in to Chinese users of Office 365 operated by 21Vianet. This requires submitting two separate copy of your app—one submission using the client ID for China and targeting Chinese users of Office 365 operated by 21Vianet, and the other submission using the client ID for the rest of the world. When you submit your add-in in the Seller Dashboard for distribution in China, you block access for all countries except China. In addition, you also create a separate add-in listing.