test(test_completion.py): fix azure read from env variable test

docs/my-website/docs/routing.md

@@ -3,7 +3,7 @@ import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 
 
-# Router - Load Balancing, Queueing
+# Router - Load Balancing, Fallbacks
 
 LiteLLM manages:
 - Load-balance across multiple deployments (e.g. Azure/OpenAI)

litellm/tests/test_completion.py

@@ -606,7 +606,7 @@ def test_completion_azure():
         response = completion(
             model="azure/chatgpt-v-2",
             messages=messages,
-            api_key="os.environ/AZURE_API_KEY_NA"
+            api_key="os.environ/AZURE_API_KEY"
         )
         print(f"response: {response}")
         ## Test azure flag for backwards compatibility