docs: fix formatting issue in rockset.ipynb (#16328)

**Description:** randomly discovered while working on another PR
https://github.com/quarto-dev/quarto-cli/discussions/8131#discussioncomment-8027706

@anubhav94N ICYI

docs/docs/integrations/vectorstores/rockset.ipynb

@@ -17,7 +17,7 @@
    "id": "b823d64a",
    "metadata": {},
    "source": [
-    "## Setting Up Your Environment[](https://python.langchain.com/docs/modules/data_connection/vectorstores/integrations/rockset#setting-up-environment)\n",
+    "## Setting Up Your Environment\n",
     "\n",
     "1. Leverage the `Rockset` console to create a [collection](https://rockset.com/docs/collections/) with the Write API as your source. In this walkthrough, we create a collection named `langchain_demo`. \n",
     "    \n",
@@ -249,14 +249,6 @@
     "\n",
     "Keep an eye on https://rockset.com/ for future updates in this space."
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "054de494-e6c0-453a-becd-ebfb2fdf541a",
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {