fixed link

Author: bandersmsft

articles/cost-management-billing/reservations/prepare-buy-reservation.md

@@ -85,7 +85,7 @@ You can purchase reservations from Azure portal, APIs, PowerShell, CLI. Read the
 - [Azure Files](../../storage/files/files-reserve-capacity.md?toc=/azure/cost-management-billing/reservations/toc.json)
 - [Azure VMware Solution](../../azure-vmware/reserved-instance.md?toc=/azure/cost-management-billing/reservations/toc.json)
 - [Azure Cosmos DB](../../cosmos-db/cosmos-db-reserved-capacity.md?toc=/azure/cost-management-billing/reservations/toc.json)
-- [Azure OpenAI](azure-open-ai.md)
+- [Azure OpenAI](azure-openai.md)
 - [Azure SQL Edge](prepay-sql-edge.md)
 - [Databricks](prepay-databricks-reserved-capacity.md)
 - [Data Explorer](/azure/data-explorer/pricing-reserved-capacity?toc=/azure/cost-management-billing/reservations/toc.json)