Fix broken links

Author: flanakin

articles/cost-management-billing/costs/understand-cost-mgt-data.md

@@ -106,15 +106,15 @@ Azure Cost Management receives tags as part of each usage record submitted by th
 - Resource tags are only supported for resources deployed to resource groups.
 - Some deployed resources may not support tags or may not include tags in usage data – see [Tags support for Azure resources](../../azure-resource-manager/tag-support.md).
 - Resource tags are only included in usage data while the tag is applied – tags are not applied to historical data.
-- Resource tags are only available in Cost Management after the data is refreshed – see [Usage data update frequency varies](#usage-data-update-frequency-varies).
+- Resource tags are only available in Cost Management after the data is refreshed – see [Cost and usage data updates and retention](#cost-and-usage-data-updates-and-retention).
 - Resource tags are only available in Cost Management when the resource is active/running and producing usage records (e.g. not when a VM is deallocated).
 - Managing tags requires contributor access to each resource.
 - Managing tag policies requires either owner or policy contributor access to a management group, subscription, or resource group.
 
 If you do not see a specific tag in Cost Management, consider the following:
 
 - Was the tag applied directly to the resource?
-- Was the tag applied more than 24 hours ago? See [Usage data update frequency varies](#usage-data-update-frequency-varies)
+- Was the tag applied more than 24 hours ago? See [Cost and usage data updates and retention](#cost-and-usage-data-updates-and-retention)
 - Does the resource type support tags? The following resource types do not support tags in usage data as of December 1, 2019. See [Tags support for Azure resources](../../azure-resource-manager/tag-support.md) for the full list of what is supported.
     - Azure Active Directory B2C Directories
     - Azure Firewalls