update pages and sitemap based on recent commits

next/rules.html

@@ -479,7 +479,7 @@ app from time to time to view IOCCC mastodon updates.</p>
 granted provided this this copyright and notice are included in its entirety
 and remains unaltered. All other uses <strong>MUST</strong> receive prior permission in
 writing by <a href="../contact.html">contacting the judges</a>.</p>
-<h2 id="rules-version">Rules version</h2>
+<h2 id="rules-version">Rules Version</h2>
 <p>These IOCCC Rules are version <strong>29.05 2025-11-21</strong>.</p>
 <p>Be sure to read the <a href="guidelines.html">IOCCC guidelines</a>.</p>
 <div id="rule0">
@@ -575,7 +575,7 @@ a case insensitive filesystem.</p></li>
 <p>See <a href="../markdown.html">IOCCC markdown guidelines</a>.</p>
 <p>See <a href="rules.html#rule-17---packaging">Rule 17 - Packaging</a>.</p>
 <div id="rule5">
-<h2 id="rule-5---purity">Rule 5 - Purity</h2>
+<h2 id="rule-5---integrity">Rule 5 - Integrity</h2>
 </div>
 <p>Your submission <strong>MUST NOT</strong> modify the filenames or content of any of
 your original submission, such as <code>prog.c</code>, <code>Makefile</code>, or any supplied
@@ -658,7 +658,7 @@ bits are <strong>NOT</strong> allowed in submissions and those bits will <strong
 <code>mkiocccentry(1)</code>.</p>
 <p>See <a href="rules.html#rule-4---files">Rule 4 - Files</a>,
 and
-<a href="rules.html#rule-5---purity">Rule 5 - Purity</a>.</p>
+<a href="rules.html#rule-5---integrity">Rule 5 - Integrity</a>.</p>
 <div id="rule11">
 <h2 id="rule-11---abuse">Rule 11 - Abuse</h2>
 </div>