minor update

module2/exo4/exercice.ipynb

@@ -100,6 +100,13 @@
     "Nanswer = datatab[:,4]"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Afficher les données"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 54,