Update python.md (Typo "Azure OpenAI service"→"Azure OpenAI Service")

https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/ai-services/openai/includes/python.md
#PingMSFTDocs

Author: hyoshioka0128

articles/ai-services/openai/includes/python.md

@@ -46,7 +46,7 @@ pip install openai==0.28.1
 
 ## Retrieve key and endpoint
 
-To successfully make a call against the Azure OpenAI service, you'll need the following:
+To successfully make a call against the Azure OpenAI Service, you'll need the following:
 
 |Variable name | Value |
 |--------------------------|-------------|