Update toy_document_orgmode_python_en.org

module2/exo1/toy_document_orgmode_python_en.org

@@ -27,7 +27,7 @@ pi
 #+RESULTS:
 
 * 2. *Buffon's needle
-Applying the method of Buffon's needle, we get the *approximation*
+Applying the method of [Buffon's needle[https://en.wikipedia.org/wiki/Buffon%27s_needle_problem]], we get the *approximation*
 #+begin_src python :results output :exports both
 import numpy as np
 np.random.seed(seed=42)