[docs] Fix docsite build (#36081) (#36082)

Docsite began to fail becuase it attempted to read lines from this code
block that is empty. Clearly a mistake to have an empty code cell, but
also added a code check for this:
[Internal Link]

cherrypick
[Internal Link]

modular-orig-commit: 081e133c37790c9596ee2efa4fd8b8fdd8ae2a52

Author: scottamain

docs/manual/parameters/index.ipynb

@@ -870,18 +870,6 @@
     "        func(i)"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "attachments": {},
    "cell_type": "markdown",