Some outputs of code cells don't show up on hf.co/learn

The ["Embedding multimodal data for similarity search using 🤗 transformers, 🤗 datasets and FAISS" ](https://huggingface.co/learn/cookbook/faiss_with_hf_datasets_and_clip) notebook has images in some outputs which don't show up in the published version.

The ["Building A RAG System with Gemma, MongoDB and Open Source Models"](https://huggingface.co/learn/cookbook/rag_with_hugging_face_gemma_mongodb) notebook has pandas dataframe outputs in some code cells that don't show up in the published version.

It would be great if we could render both types of outputs.

cc @mishig25

Start with the faiss_with_hf_datasets_and_clip and rag_with_hugging_face_gemma_mongodb notebooks linked in the issue, then compare their source outputs with the published versions on hf.co/learn. Trace how notebook outputs are rendered and verify that image outputs and pandas dataframe outputs appear in both published notebooks.

Written by the indexing model from the issue text.