update chat fine-tuning notebook

Author: mrmer1

notebooks/Fine_tuning_Models_for_the_Chat_Endpoint.ipynb

@@ -6,11 +6,11 @@
         "id": "HZ_ZFietTx7o"
       },
       "source": [
-        "# Fine-tuning Models for the Chat Endpoint\n",
+        "# Fine-tuning Models for Cohere Chat\n",
         "\n",
         "In this chapter, you will fine-tune a chatbot on custom conversational data to improve its performance at a specific task.  \n",
         "\n",
-        "_Read the [accompanying blog post here]()._"
+        "_Read the [accompanying blog post here](https://txt.cohere.com/chat-finetuning-guide/)._"
       ]
     },
     {
@@ -609,7 +609,9 @@
         "id": "FgtQcmzmTx7z"
       },
       "source": [
-        "## Step 3: Evaluate the Fine-Tuned Model with Test Data\n",
+        "## Step 3: Evaluate the Fine-Tuned Model\n",
+        "\n",
+        "### With Test Data\n",
         "\n"
       ]
     },
@@ -836,7 +838,7 @@
         "id": "bRkgtYAHTx7z"
       },
       "source": [
-        "## Step 4: Evaluate the Fine-Tuned Model in the Chat Context"
+        "### In the Chat Context"
       ]
     },
     {