Update gpt-v-rest.md

Adding pointer to resource availability

Author: kbrowne8

articles/ai-services/openai/includes/gpt-v-rest.md

@@ -18,7 +18,7 @@ Use this article to get started using the Azure OpenAI REST APIs to deploy and u
 - Access granted to Azure OpenAI in the desired Azure subscription. Currently, access to this service is granted only by application. You can apply for access to Azure OpenAI by completing the form at https://aka.ms/oai/access. Open an issue on this repo to contact us if you have an issue. 
 - <a href="https://www.python.org/" target="_blank">Python 3.7.1 or later version</a>.
 - The following Python libraries: `requests`, `json`.
-- An Azure OpenAI Service resource with a GPT-4 Turbo with Vision model deployed. The resource must be in the `SwitzerlandNorth`, `SwedenCentral`, `WestUS`, or `AustraliaEast` Azure region. For more information about model deployment, see [the resource deployment guide](/azure/ai-services/openai/how-to/create-resource).
+- An Azure OpenAI Service resource. See [GPT-4 and GPT-4 Turbo Preview model availability](../concepts/models.md#gpt-4-and-gpt-4-turbo-preview-model-availability) for available regions. For more information about resource creation, see the [resource deployment guide](/azure/ai-services/openai/how-to/create-resource).
 - For Vision enhancement (optional): An Azure Computer Vision resource in the same region as your Azure OpenAI resource, in the paid (S0) tier.
 
 > [!NOTE]