improve PR #246 - part 2

Simplify link tags in rules and guidelines.

Ran `make quick_www` to perform the above.

sitemap.xml

@@ -16826,11 +16826,11 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/next/guidelines.html</loc>
-    <lastmod>2025-12-02T03:51:13+00:00</lastmod>
+    <lastmod>2025-12-02T04:22:32+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/next/guidelines.md</loc>
-    <lastmod>2025-12-02T03:41:39+00:00</lastmod>
+    <lastmod>2025-12-02T04:21:09+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/next/index.html</loc>
@@ -16870,11 +16870,11 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/next/rules.html</loc>
-    <lastmod>2025-12-02T03:51:14+00:00</lastmod>
+    <lastmod>2025-12-02T04:16:29+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/next/rules.md</loc>
-    <lastmod>2025-12-02T03:42:10+00:00</lastmod>
+    <lastmod>2025-12-02T04:13:05+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/next/submit.html</loc>
@@ -16938,7 +16938,7 @@
 </url>
 <url>
     <loc>https://www.ioccc.org/status.html</loc>
-    <lastmod>2025-12-02T03:51:32+00:00</lastmod>
+    <lastmod>2025-12-02T04:16:46+00:00</lastmod>
 </url>
 <url>
     <loc>https://www.ioccc.org/status.json</loc>