doc: Tweak gm2 mailing list address

gcc:
	* doc/gm2.texi (Contributing): Tweak gm2 mailing list address.

diff --git a/gcc/doc/gm2.texi b/gcc/doc/gm2.texi
index b2e4aa2e9c012e8d56025fd39aee8f5f5ebdfad1..1db07c91cf2cfc6e0b9f6f84365563b28177483b 100644 (file)
--- a/gcc/doc/gm2.texi
+++ b/gcc/doc/gm2.texi
@@ -3060,7 +3060,7 @@ Please do and please read the GNU Emacs info under
 
 You might consider joining the GM2 Mailing list before you start
 coding.  The mailing list may be subscribed via a web interface
-@uref{http://lists.nongnu.org/mailman/listinfo/gm2} or via email
+@uref{https://lists.nongnu.org/mailman/listinfo/gm2} or via email
 @email{gm2-subscribe@@nongnu.org}.
 
 Many thanks and enjoy your coding!