add sora to quotas

Author: PatrickFarley

articles/ai-services/openai/quotas-limits.md

@@ -26,6 +26,7 @@ The following sections provide you with a quick guide to the default quotas and
 | Default DALL-E 2 quota limits | 2 concurrent requests |
 | Default DALL-E 3 quota limits| 2 capacity units (6 requests per minute)|
 | Default GPT-image-1 quota limits | 2 capacity units (6 requests per minute) |
+| Default Sora quota limits | 60 requests per minute |
 | Default speech to text audio API quota limits | 3 requests per minute |
 | Maximum prompt tokens per request | Varies per model. For more information, see [Azure OpenAI models](./concepts/models.md)|
 | Max Standard deployments per resource | 32 |