Update hf_client.py

hf_client.py

@@ -2,9 +2,10 @@
 ---
 
 ### hf_client.py
-```python
+
 from huggingface_hub import InferenceClient, HfApi
 from tavily import TavilyClient
+import os
 
 # HF Inference Client
 HF_TOKEN = os.getenv('HF_TOKEN')