update reference documentation

Author: mrbullwinkle

articles/ai-services/openai/concepts/models.md

@@ -178,7 +178,7 @@ PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{
 
 **Request body**
 
-This is only a subset of the available request body parameters. For the full list of the parameters, you can refer to the [REST API spec](https://github.com/Azure/azure-rest-api-specs/blob/1e71ad94aeb8843559d59d863c895770560d7c93/specification/cognitiveservices/resource-manager/Microsoft.CognitiveServices/stable/2023-05-01/cognitiveservices.json).
+This is only a subset of the available request body parameters. For the full list of the parameters, you can refer to the [REST API reference documentation](/rest/api/cognitiveservices/accountmanagement/deployments/create-or-update).
 
 |Parameter|Type| Description |
 |--|--|--|