add depth subdir

README.md

@@ -152,7 +152,7 @@ Otherwise you can:
 
 1. Download all files
 2. Put `tokenizer.pkl` and `token_bytes.pt` in `~/.cache/nanochat/tokenizer`
-3. Put `model_000650.pt` and `meta_000650.json` in `~/.cache/nanochat/chatsft_checkpoints`
+3. Put `model_000650.pt` and `meta_000650.json` in `~/.cache/nanochat/chatsft_checkpoints/d20`
 4. Clone https://github.com/karpathy/nanochat
 5. Run `uv sync` followed by `uv run python -m scripts.chat_web`