Update change log

Author: iadawn

Diff for: guidelines/index.html

@@ -1623,8 +1623,7 @@ <h2>Change log</h2>
             </li>
             <li>2024-03-15: Updated placeholder guidelines with exploratory guidelines.
             </li>
-			<li>2024-??-??: Updated placeholder guidelines; added 3 developing guidelines and accessibility supported; and 
-				moved explanatory content to the <a href="https://www.w3.org/TR/wcag-3.0-explainer/">Explainer for WCAG 3.0</a>
+			<li>2024-??-??: Reorganized exploratory guidelines; added 3 developing guidelines and accessibility supported; added user agent support, updated conformance section,  and moved explanatory content to the <a href="https://www.w3.org/TR/wcag-3.0-explainer/">Explainer for WCAG 3.0</a>
 			</li>
 		</ul>