Change http to https

README.txt

@@ -22,8 +22,8 @@ Some basic general information is available in "devdocs" directory. If the direc
 If you wish to use the set only as a reference, you will be mostly interested in items in folder "base".
 
 The materials available here are only these specific to this set; general guides and references can be found at:
-* http://simutrans-germany.com/wiki/wiki/tiki-index.php
-* http://graphics.simutrans.com/
+* https://simutrans-germany.com/wiki/wiki/tiki-index.php
+* https://graphics.simutrans.com/
 
 
 License matters
@@ -48,4 +48,4 @@ Contact
 -------
 
 Pak128 is maintained by a number of Simutrans community members. Preferred method of communication is via the Simutrans International Forum, particularly the pak128 sub-boards:
-http://forum.simutrans.com/index.php?board=26.0
+https://forum.simutrans.com/index.php?board=26.0