Update runtime files
diff --git a/runtime/tutor/tutor.el b/runtime/tutor/tutor.el
index 8b4fd90..9a2fd98 100644
--- a/runtime/tutor/tutor.el
+++ b/runtime/tutor/tutor.el
@@ -796,7 +796,7 @@
 	Ôï ðñþôï âéâëßï ðëÞñùò áöéåñùìÝíï óôïí Vim.
 	Éäéáßôåñá ÷ñÞóéìï ãéá áñ÷Üñéïõò.
 	ÕðÜñ÷ïõí ðïëëÜ ðáñáäåßãìáôá êáé åéêüíåò.
-	Äåßôå ôçí http://iccf-holland.org/click5.html
+	Äåßôå ôçí https://iccf-holland.org/click5.html
 
   Áõôü ôï âéâëßï åßíáé ðáëéüôåñï êáé ðåñéóóüôåñï ãéá ôïí Vi ðáñÜ ãéá ôïí Vim,
   áëëÜ åðßóçò óõíéóôþìåíï: