docs: Update link to ggml-org in multimodal.md (#13513)

* Update multimodal.md

Minor change to include the huggingface link

* Update docs/multimodal.md

---------

Co-authored-by: Xuan-Son Nguyen <[email protected]>

Author: ddpasa

docs/multimodal.md

@@ -31,7 +31,7 @@ llama-server -hf ggml-org/gemma-3-4b-it-GGUF --no-mmproj-offload
 
 ## Pre-quantized models
 
-These are ready-to-use models, most of them come with `Q4_K_M` quantization by default.
+These are ready-to-use models, most of them come with `Q4_K_M` quantization by default. They can be found at the Hugging Face page of the ggml-org: https://huggingface.co/ggml-org
 
 Replaces the `(tool_name)` with the name of binary you want to use. For example, `llama-mtmd-cli` or `llama-server`