fix broken links, clarify documentation

Libraries/LLM/README.md

@@ -1,11 +1,19 @@
 #  Llama
 
-This is a port of the llama model from:
+This is a port of several models from:
 
-- https://github.com/ml-explore/mlx-examples/blob/main/llms/mlx_lm/models/llama.py
+- https://github.com/ml-explore/mlx-examples/blob/main/llms/mlx_lm/models/
 
 You can use this to load models from huggingface, e.g.:
 
 - https://huggingface.co/mlx-community/Mistral-7B-v0.1-hf-4bit-mlx
 
+Currently supported model types are:
+
+- Llama / Mistral
+- Gemma
+- Phi
+
+See [Configuration.swift](Configuration.swift) for more info.
+
 See [llm-tool](../../Tools/llm-tool)