further corrections

module2/exo1/toy_notebook_en.ipynb

@@ -11,9 +11,8 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Asking the maths library \n",
-    "\n",
-    "My computer tells me that $\\pi$ is *approximatively*\n"
+    "## Asking the maths library\n",
+    "My computer tells me that $\\pi$ is *approximatively*"
    ]
   },
   {
@@ -39,7 +38,7 @@
    "metadata": {},
    "source": [
     "## Buffon’s needle\n",
-    "Applying the method of [Buffon’s needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the **approximation**"
+    "Applying the method of [Buffon’s needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the __approximation__"
    ]
   },
   {