Update CODEOWNERS (#270)

Author: sdgilley

.github/CODEOWNERS

@@ -7,6 +7,8 @@
 
 
 #### files referenced in docs (DO NOT EDIT, except for Docs team!!!) ###################
+/scenarios/langchain/getting-started-with-langchain-chat-models.ipynb @azure-samples/AI-Platform-Docs
+/scenarios/langchain/getting-started-with-langchain-embeddings.ipynb @azure-samples/AI-Platform-Docs
 /scenarios/projects/basic/chat-simple.py @azure-samples/AI-Platform-Docs
 /scenarios/projects/basic/chat-template.py @azure-samples/AI-Platform-Docs
 /scenarios/rag/custom-rag-app/assets/chat_eval_data.jsonl @azure-samples/AI-Platform-Docs
@@ -19,5 +21,3 @@
 /scenarios/rag/custom-rag-app/evaluate.py @azure-samples/AI-Platform-Docs
 /scenarios/rag/custom-rag-app/get_product_documents.py @azure-samples/AI-Platform-Docs
 /scenarios/rag/custom-rag-app/requirements.txt @azure-samples/AI-Platform-Docs
-/scenarios/langchain/getting-started-with-langchain-chat-models.ipynb @azure-samples/AI-Platform-Docs
-/scenarios/langchain/getting-started-with-langchain-embeddings.ipynb @azure-samples/AI-Platform-Docs