fix test

tests/_cli/snapshots/ipynb.txt

@@ -1,12 +1,28 @@
----
-title: Notebook
-marimo-version: 0.5.2
----
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "cee3eba2",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import marimo as mo"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "bbb9a3bf",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "slider = mo.ui.slider(0, 10)"
+   ]
+  }
+ ],
+ "metadata": {},
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
 
-```{.python.marimo}
-import marimo as mo
-```
-
-```{.python.marimo}
-slider = mo.ui.slider(0, 10)
-```

tests/_cli/test_cli_export.py

@@ -443,7 +443,7 @@ class TestExportIpynb:
     )
     def test_export_ipynb(self, temp_marimo_file: str) -> None:
         p = subprocess.run(
-            ["marimo", "export", "md", temp_marimo_file],
+            ["marimo", "export", "ipynb", temp_marimo_file],
             capture_output=True,
         )
         assert p.returncode == 0, p.stderr.decode()