adds short section on lora params

notebooks/drafts/olmo_peft.ipynb

@@ -48,7 +48,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Next, we set up the [`LoraConfig`](https://huggingface.co/docs/peft/en/package_reference/lora#peft.LoraConfig). This config specifies which layers we apply the LoRA adapters to"
+    "Next, we set up the [`LoraConfig`](https://huggingface.co/docs/peft/en/package_reference/lora#peft.LoraConfig). This config specifies which layers we apply the LoRA adapters to (`target_modules`); the rank and scaling factor for the adapters (`r` and `lora_alpha`); and the dropout rate (`lora_dropout`)."
    ]
   },
   {