Update approach.py (Typo "Azure Open AI"→"Azure OpenAI") (#1431)

https://github.com/Azure-Samples/azure-search-openai-demo/blob/main/app/backend/approaches/approach.py
#PingMSFTDocs

app/backend/approaches/approach.py

@@ -193,7 +193,7 @@ def get_citation(self, sourcepage: str, use_image_citation: bool) -> str:
 
     async def compute_text_embedding(self, q: str):
         embedding = await self.openai_client.embeddings.create(
-            # Azure Open AI takes the deployment name as the model name
+            # Azure OpenAI takes the deployment name as the model name
             model=self.embedding_deployment if self.embedding_deployment else self.embedding_model,
             input=q,
         )