Add examples in sampling parameters (#4039)

docs/backend/native_api.ipynb

@@ -57,7 +57,7 @@
    "metadata": {},
    "source": [
     "## Generate (text generation model)\n",
-    "Generate completions. This is similar to the `/v1/completions` in OpenAI API. Detailed parameters can be found in the [sampling parameters](https://docs.sglang.ai/backend/sampling_params.html)."
+    "Generate completions. This is similar to the `/v1/completions` in OpenAI API. Detailed parameters can be found in the [sampling parameters](./sampling_params.md)."
    ]
   },
   {
@@ -73,6 +73,11 @@
     "print_highlight(response.json())"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": []
+  },
   {
    "cell_type": "markdown",
    "metadata": {},