Update runtime files
diff --git a/runtime/tutor/tutor.hu.utf-8 b/runtime/tutor/tutor.hu.utf-8
index 5e39c95..f2e0d40 100644
--- a/runtime/tutor/tutor.hu.utf-8
+++ b/runtime/tutor/tutor.hu.utf-8
@@ -810,7 +810,7 @@
 	Publisher: New Riders
   The first book completely dedicated to Vim.  Especially useful for beginners.
   There are many examples and pictures.
-  See http://iccf-holland.org/click5.html
+  See https://iccf-holland.org/click5.html
 
   This book is older and more about Vi than Vim, but also recommended:
 	Learning the Vi Editor - by Linda Lamb