Index: doc/example-scripts/tk-horse-race.tcl
===================================================================
diff -u -r1711d2463a88d72589e00a87b0a0842cf8e7f9fa -ra963e8896fd07c345ccfa034cbd043344edbf083
--- doc/example-scripts/tk-horse-race.tcl	(.../tk-horse-race.tcl)	(revision 1711d2463a88d72589e00a87b0a0842cf8e7f9fa)
+++ doc/example-scripts/tk-horse-race.tcl	(.../tk-horse-race.tcl)	(revision a963e8896fd07c345ccfa034cbd043344edbf083)
@@ -1,5 +1,5 @@
 # A small Horse Race game, originally developed by Richard Suchenwirth
-# in plain Tcl (see http://wiki.tcl-lang.org/3467). The game was rewritten
+# in plain Tcl (see https://wiki.tcl-lang.org/3467). The game was rewritten
 # as a design study in NX by Gustaf Neumann in May 2011.
 #
 # image::tk-horse-race.png[]