Update cpp-marketplace-tab.md

The category and industry taxonomy structure for Azure Marketplace and AppSource is changing on 01/31/20. I am updating the marketplace publisher guide to make sure all sections are updated to the new taxonomy structure accordingly.

Author: feospina

articles/marketplace/cloud-partner-portal/virtual-machine/cpp-marketplace-tab.md

@@ -32,7 +32,7 @@ The following table describes the purpose and content of these fields. Required
 | **Marketing Identifier\***  | A unique URL to associate to this offer, typically includes your organization and solution name, maximum length 50 characters.  For example: <br/> `https://azuremarketplace.microsoft.com/marketplace/apps/contoso.sampleApp`  |
 | **Preview Subscription IDs\*** | Add one to 100 subscription identifiers of previewers. These white-listed subscriptions will have access to the offer once it's published, before it goes live. |
 | **Useful Links**          | Add URLs to the documentations, release notes, FAQs, and so on. |
-| **Suggested Categories (Max 5)\*** | Multi-selection of business and technical categories that offer can be best associated with.  Maximum five allowed.  |
+| **Suggested Categories\*** | Select up to two (2) categories, including a primary and a secondary category (optional). Select up to two (2) subcategories for each primary and/or secondary category. If no subcategory is selected, you offer will still be discoverable on the selected category only. |
 |  |  |