adding link to Pythin tutorial 2 in index.html

Author: matyikriszta

index.html

@@ -75,6 +75,7 @@ <h2>Python</h2>
 
           <ul>
             <li><a href="python/lesson1/tutorial.html">Lesson 1 - Introduction to Python</a></li>
+            <li><a href="python/lesson2/tutorial.html">Lesson 2 - Python tutorial 2</a></li>
           </ul>
           </section>
           <footer>