use meta-llama/Llama-2-70b-chat-hf by default

.env

@@ -51,7 +51,7 @@ LLM_OPENAI_API_MODEL="gpt-3.5-turbo"
 LLM_HF_INFERENCE_ENDPOINT_URL=""
 
 # If you decided to use a Hugging Face Inference API model for the LLM engine
-LLM_HF_INFERENCE_API_MODEL="codellama/CodeLlama-7b-hf"
+LLM_HF_INFERENCE_API_MODEL="meta-llama/Llama-2-70b-chat-hf"
 
 # ----------- COMMUNITY SHARING (OPTIONAL) -----------
 # You don't need those community sharing options to run the AI Comic Factory