fix: Update rerank notebook for latest models (#3752)

* fix: Update rerank notebook for latest models

* Update sdk/python/foundation-models/cohere/rerank-cohere-client.ipynb

Co-authored-by: Michael <michael.kozakov@gmail.com>

* fix typo

* remove empty cell

* refine base_url for clarity

* fix formatting

---------

Co-authored-by: Michael <michael.kozakov@gmail.com>

Author: jasonozuzu-cohere

sdk/python/foundation-models/cohere/rerank-cohere-client.ipynb

@@ -22,7 +22,7 @@
     "* Register for a valid Azure account with subscription \n",
     "* Make sure you have access to [Azure AI Studio](https://learn.microsoft.com/en-us/azure/ai-studio/what-is-ai-studio?tabs=home)\n",
     "* Create a project and resource group\n",
-    "* Select `Cohere Rerank V3 (English)` or `Cohere Rerank V3 (multilingual)`.\n",
+    "* Select `Cohere Rerank V3.5`, `Cohere Rerank V4 Fast` or `Cohere Rerank V4 Pro`.\n",
     "\n",
     "    > Notice that some models may not be available in all the regions in Azure AI and Azure Machine Learning. On those cases, you can create a workspace or project in the region where the models are available and then consume it with a connection from a different one. To learn more about using connections see [Consume models with connections](https://learn.microsoft.com/en-us/azure/ai-studio/how-to/deployments-connections)\n",
     "\n",
@@ -67,7 +67,7 @@
    "source": [
     "To use `cohere`, create a client and configure it as follows:\n",
     "\n",
-    "- `endpoint`: Use the endpoint URL from your deployment. Include `/v1` at the end of the endpoint.\n",
+    "- `base_url`: Use the endpoint URL from your deployment. Include everything except the final API route (eg: omit `/v2/rerank`).\n",
     "- `api_key`: Use your API key."
    ]
   },
@@ -80,7 +80,8 @@
    "outputs": [],
    "source": [
     "co = cohere.ClientV2(\n",
-    "    base_url=\"https://<endpoint>.<region>.inference.ai.azure.com/v1\", api_key=\"<key>\"\n",
+    "    base_url=\"https://<endpoint>.services.ai.azure.com/providers/cohere/\",\n",
+    "    api_key=\"<key>\",\n",
     ")"
    ]
   },
@@ -141,7 +142,7 @@
     "]\n",
     "\n",
     "response = co.rerank(\n",
-    "    model=\"azureai\",\n",
+    "    model=\"azureai\",  # NOTE: For rerank v4, you must specify the model e.g. `Cohere-rerank-v4.0-fast` or `Cohere-rerank-v4.0-pro`\n",
     "    documents=[yaml.dump(doc, sort_keys=False) for doc in documents],\n",
     "    query=\"What emails have been about returning items?\",\n",
     "    top_n=5,\n",
@@ -152,7 +153,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Aditional resources\n",
+    "## Additional resources\n",
     "\n",
     "Here are some additional reference:  \n",
     "\n",