Update the convert_models/run.sh

[melodyliu1986]

I want to convert the huggingface models to gguf file, but always met errors when following the README.md, then I found the files in llama.cpp repo are updated:

python download_huggingface.py --model $hf_model_url --> this should be converted_models/download_huggingface.py
python llama.cpp/convert.py /opt/app-root/src/converter/converted_models/$hf_model_url -> there is no convert.py in https://github.com/ggerganov/llama.cpp
python llama.cpp/convert-hf-to-gguf.py /opt/app-root/src/converter/converted_models/$hf_model_url -> llama.cpp/convert-hf-to-gguf.py should be llama.cpp/convert_hf_to_gguf.py now

Can you fix the problem and let me try again?

[rhatdan]

Care to open a PR?

[melodyliu1986]

Care to open a PR?
Sure, please review it #741