Update content-filter.md

Added a separate link for Azure Government customers to request modified content filters. The forms are different, and we have consistently seen customers selecting the wrong form. Putting both forms together will hopefully reduce confusion.

Author: challenp

articles/ai-services/openai/concepts/content-filter.md

@@ -68,7 +68,7 @@ The default content filtering configuration for the GPT model series is set to f
 | High              | Yes| Yes | Content detected at severity levels low and medium isn't filtered. Only content at severity level high is filtered. Requires approval<sup>1</sup>.|
 | No filters | If approved<sup>1</sup>| If approved<sup>1</sup>| No content is filtered regardless of severity level detected. Requires approval<sup>1</sup>.|
 
-<sup>1</sup> For Azure OpenAI models, only customers who have been approved for modified content filtering have full content filtering control and can turn content filters off. Apply for modified content filters via this form: [Azure OpenAI Limited Access Review: Modified Content Filters](https://ncv.microsoft.com/uEfCgnITdR)
+<sup>1</sup> For Azure OpenAI models, only customers who have been approved for modified content filtering have full content filtering control and can turn content filters off. Apply for modified content filters via this form: [Azure OpenAI Limited Access Review: Modified Content Filters](https://ncv.microsoft.com/uEfCgnITdR) For Azure Government customers, please apply for modified content filters via this form: [Azure Government - Request Modified Content Filtering for Azure OpenAI Service](https://aka.ms/AOAIGovModifyContentFilter).
 
 This preview feature is available for the following Azure OpenAI models:
 * GPT model series (text)