Fixed year.

Author: janpgit

docs/index.html

@@ -132,7 +132,7 @@ <h2><a name="practices">Practices and class assignments</a></h2>
 
 <p>The second phase must be finished and handed over to us before the
 examination period for the Summer semester starts, i.e. by Sunday 23:59, May 24,
-2019.
+2020.
 
 <p>If you need to finish your semester earlier (that may apply to Erasmus
 students), you need to finish the 2nd assignment in full before that.