Update User Guide

Author: actions-user

changelogs/v4.7.3.html

@@ -323,6 +323,7 @@ <h2><a class="toc-backref" href="#id5" role="doc-backlink">Bugs Fixed</a><a clas
 <ul class="simple">
 <li><p><strong>Autoloader:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">Autoloader::unregister()</span></code> (used during tests) silently failed to remove handlers from the SPL autoload stack, causing closures to accumulate permanently.</p></li>
 <li><p><strong>Common:</strong> Fixed a bug where the <code class="docutils literal notranslate"><span class="pre">command()</span></code> helper function did not properly clean up output buffers, which could lead to risky tests when exceptions were thrown.</p></li>
+<li><p><strong>Validation:</strong> Fixed a bug where <code class="docutils literal notranslate"><span class="pre">Validation::getValidated()</span></code> dropped fields whose validated value was explicitly <code class="docutils literal notranslate"><span class="pre">null</span></code>.</p></li>
 </ul>
 <p>See the repo’s
 <a class="reference external" href="https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md">CHANGELOG.md</a>