doc: switch links to https

These sites offer https versions of their content.
Using the https versions provides some protection for users.

Signed-off-by: Josh Soref <jsoref@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Cherry-picked-from: d05b08cd52cfda627f1d865bdfe6040a2c9521b5
Signed-off-by: Johannes Sixt <j6t@kdbg.org>

diff --git a/gitk b/gitk
index dd80ab8f3bab4aedadc262c0f792ceccea875860..7a087f123d7563d27a88751f70ead6172441af20 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -11956,7 +11956,7 @@ proc formatdate {d} {
 }
 
 # This list of encoding names and aliases is distilled from
-# http://www.iana.org/assignments/character-sets.
+# https://www.iana.org/assignments/character-sets.
 # Not all of them are supported by Tcl.
 set encoding_aliases {
     { ANSI_X3.4-1968 iso-ir-6 ANSI_X3.4-1986 ISO_646.irv:1991 ASCII