Merge pull request #5058 from alphagov/document-assets-management

Add more information for asset management

Author: minhngocd

source/manual/manage-assets.html.md.erb

@@ -21,6 +21,8 @@ For example, for `https://assets.publishing.service.gov.uk/government/uploads/up
 
 * For debugging Whitehall asset workflows, check the [asset flow diagrams in Whitehall](https://docs.publishing.service.gov.uk/repos/whitehall/assets.html#file-attachments-change-flows)
 * For more information on the asset state machine, see [this documentation](https://docs.publishing.service.gov.uk/repos/asset-manager/asset_state_machine_overview.html).
+* Look at [Whitehall's existing known bugs here](asset flow diagrams in Whitehall](https://docs.publishing.service.gov.uk/repos/whitehall/assets.html#current-known-bugs).
+* Whitehall's [currently unsupported asset features](asset flow diagrams in Whitehall](https://docs.publishing.service.gov.uk/repos/whitehall/assets.html#current-unsupported-workflows).
 
 ## Remove an asset