Documentation: changes.rst: update several outdated project URLs

Update projects URLs in the changes.rst file.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/a9c3c509-8f30-fcc4-d9e0-b53aeaa89e4f@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index 2284f22..e478635 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -383,7 +383,8 @@
 E2fsprogs
 ---------
 
-- <http://prdownloads.sourceforge.net/e2fsprogs/e2fsprogs-1.29.tar.gz>
+- <https://www.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/>
+- <https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/>
 
 JFSutils
 --------
@@ -393,12 +394,13 @@
 Reiserfsprogs
 -------------
 
-- <http://www.kernel.org/pub/linux/utils/fs/reiserfs/>
+- <https://git.kernel.org/pub/scm/linux/kernel/git/jeffm/reiserfsprogs.git/>
 
 Xfsprogs
 --------
 
-- <ftp://oss.sgi.com/projects/xfs/>
+- <https://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git>
+- <https://www.kernel.org/pub/linux/utils/fs/xfs/xfsprogs/>
 
 Pcmciautils
 -----------
@@ -437,7 +439,9 @@
 PPP
 ---
 
-- <ftp://ftp.samba.org/pub/ppp/>
+- <https://download.samba.org/pub/ppp/>
+- <https://git.ozlabs.org/?p=ppp.git>
+- <https://github.com/paulusmack/ppp/>
 
 NFS-utils
 ---------
@@ -447,7 +451,7 @@
 Iptables
 --------
 
-- <http://www.iptables.org/downloads.html>
+- <https://netfilter.org/projects/iptables/index.html>
 
 Ip-route2
 ---------