use code comment instead of markdown

notebook/my_vehicle_registration.ipynb

@@ -1,19 +1,19 @@
 {
  "cells": [
   {
-   "cell_type": "markdown",
-   "id": "20cce717-30b6-43f4-8254-a9ff7142f182",
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "de826aae-cb1d-4a9d-ba39-97df82114977",
    "metadata": {},
+   "outputs": [],
    "source": [
-    "```python\n",
-    "uv add pandas\n",
-    "uv add fastparquet\n",
-    "```\n",
+    "# uv add pandas\n",
+    "# uv add fastparquet\n",
     "\n",
     "# Compare panda read_parquet with  pyarrow\n",
     "\n",
-    "read_parquet is slower at 0.53\n",
-    "pyarrow time completed at 0.18\n"
+    "# read_parquet is slower at 0.53\n",
+    "# pyarrow time completed at 0.18\n"
    ]
   },
   {