Update change log to reflect fixes since 2024-12-12

Author: kfranqueiro

guidelines/index.html

@@ -728,15 +728,27 @@ <h1>Glossary</h1>
     		<h2>Change Log</h2>
     		<p>This section shows changes for WCAG 2.1 since its publication as a W3C Recommendation. These changes are also recorded as <a href="https://www.w3.org/WAI/WCAG21/errata/">errata</a>.</p>
 
-            <p>Changes since the <a href="https://www.w3.org/TR/2023/REC-WCAG21-20230921/">W3C Recommendation of 21 September 2023</a>:</p>
-            <ul>
-                <li>Modified the formatting of definitions for <a>changes of context</a>, <a>general flash and red flash thresholds</a>, and <a>structure</a></li>
-                <li>Corrected typo in <a href="#input-purposes">input purposes</a> list</li>
-                <li>Modified the visual presentation for content identified as New</li>
-                <li>Modified the language covering devices in the <a href="#abstract">Abstract</a></li>
-                <li>Made editorial changes to improve consistent use of definitions in the success criteria</li>
-                <li>Made editorial changes to improve consistent use of the terms <q>success criteria/criterion</q>, <q>web</q>, <q>website</q>, and <q>web page</q></li>
-            </ul>
+        <p>Changes since the <a href="https://www.w3.org/TR/2023/REC-WCAG21-20241212/">W3C Recommendation of 12 December 2024</a>:</p>
+        <ul>
+          <li>
+            Updated content to fully reflect the changes listed under "Changes since the W3C Recommendation of 21 September 2023";
+            in the previous publication, out of the items listed under that heading, only the item related to input purposes was actually reflected in content
+          </li>
+          <li>
+            Removed the change log entry regarding visual presentation for content identified as New,
+            which was not reviewed in the context of WCAG 2.1
+          </li>
+          <li>Modified the definitions of <a>single pointer</a>, <a>used in an unusual or restricted way</a>, and <a>programmatically determined link context</a></li>
+          <li>Reverted a change to the definition of <a>pointer input</a> which had been intended for <a>single pointer</a></li>
+        </ul>
+        <p>Changes since the <a href="https://www.w3.org/TR/2023/REC-WCAG21-20230921/">W3C Recommendation of 21 September 2023</a>:</p>
+        <ul>
+          <li>Modified the formatting of definitions for <a>changes of context</a>, <a>general flash and red flash thresholds</a>, and <a>structure</a></li>
+          <li>Corrected typo in <a href="#input-purposes">input purposes</a> list</li>
+          <li>Modified the language covering devices in the <a href="#abstract">Abstract</a></li>
+          <li>Made editorial changes to improve consistent use of definitions in the success criteria</li>
+          <li>Made editorial changes to improve consistent use of the terms <q>success criteria/criterion</q>, <q>web</q>, <q>website</q>, and <q>web page</q></li>
+        </ul>
 
         <p>Changes since the <a href="https://www.w3.org/TR/2018/REC-WCAG21-20180605/">W3C Recommendation of 05 June 2018</a>:</p>
         <ul>