update web pages based on recent commits

Performed `make www` on macOS to complete the above.

sitemap.xml

@@ -5514,7 +5514,7 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/2001/index.html</loc>
-    <lastmod>2025-01-10T06:49:24+00:00</lastmod>
+    <lastmod>2025-01-28T18:41:50+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/2001/jason/2001_jason.tar.bz2</loc>
@@ -15070,7 +15070,7 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/authors.html</loc>
-    <lastmod>2025-01-16T23:38:07+00:00</lastmod>
+    <lastmod>2025-01-28T18:39:17+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/author/Sjoerd_Mullender.json</loc>