bpo-43204: Fix LibTomCrypt URL in md5module.c and sha*module.c comments (GH-24507)



Automerge-Triggered-By: GH:tiran
diff --git a/Modules/md5module.c b/Modules/md5module.c
index 1c401e8..b2e65a0 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -74,7 +74,7 @@ typedef struct {
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ * Tom St Denis, tomstdenis@gmail.com, https://www.libtom.net
  */
 
 /* rotate the hard way (platform optimizations could be done) */