Add new errata to both 2.1 and 2.2 (#4370)

This PR adds four changes to the list of errata for WCAG 2.2 and 2.1 TR
documents.

The changes are from: #4256, #4040, #4165, and #2296.

Three of the changes are to notes and examples in the specification,
which are non-normative according to the [5.1 Interpreting Normative
Requirements](https://www.w3.org/TR/WCAG22/#interpreting-normative-requirements).

One of the changes is a normative change, restricted to correcting the
alphabetical order for the list of defined terms. As such, it falls
under [Changes that do not functionally affect interpretation of the
document](https://www.w3.org/policies/process/#correction-classes).

Previews:
[2.1](https://deploy-preview-4370--wcag2.netlify.app/errata/21#since-current),
[2.2](https://deploy-preview-4370--wcag2.netlify.app/errata/22#since-current)

---------

Co-authored-by: Kenneth G. Franqueiro <[email protected]>

Author: mbgower

errata/21.html

@@ -48,7 +48,30 @@ <h3>Substantive Errata</h3>
       </section>
       <section id="editorial-{{ trDate }}">
         <h3>Editorial Errata</h3>
-        <p>No editorial errata have been recorded at present.</p>
+        <ul>
+          <li>
+            2025-07-07:
+            Correcting the alphabetical order of two definitions
+            ({% gh "6f733de" %})
+          </li>
+          <li>
+            2025-07-07:
+            In the definition for <a href="{{ trUrl }}#dfn-motion-animation">motion animation</a>,
+            amending the definition to <em>not</em> exclude blurring
+            ({% gh "38efe93" %})
+          </li>
+          <li>
+            2025-07-07:
+            In the Introduction, linking directly to new supplemental guidance
+            ({% gh "18a999f" %})
+          </li>
+          <li>
+            2025-07-07:
+            In the definition for <a href="{{ trUrl }}#dfn-single-pointer">single pointer</a>,
+            removing the period incorrectly appearing at the end of the definition
+            ({% gh "c073b16" %})
+          </li>
+        </ul>
       </section>
     </section>
 

errata/22.html

@@ -48,7 +48,35 @@ <h3>Substantive Errata</h3>
       </section>
       <section id="editorial-{{ trDate }}">
         <h3>Editorial Errata</h3>
-        <p>No editorial errata recorded at present.</p>
+        <ul>
+          <li>
+            2025-06-27:
+            Correcting the alphabetical order of two definitions
+            ({% gh "#4256" %})
+          </li>
+          <li>
+            2025-06-27:
+            In the definition for <a href="{{ trUrl }}#dfn-motion-animation">motion animation</a>,
+            amending the definition to <em>not</em> exclude blurring
+            ({% gh "#4040" %})
+          </li>
+          <li>
+            2025-06-27:
+            In <a href="{{ trUrl }}#consistent-help">3.2.6 Consistent Help</a>, harmonizing occurrences of "breakpoint" to be one word
+            ({% gh "#4165" %})
+          </li>
+          <li>
+            2025-06-27:
+            In the Introduction, linking directly to new supplemental guidance
+            ({% gh "#2296" %})
+          </li>
+          <li>
+            2025-06-27:
+            In the definitions for <a href="{{ trUrl }}#dfn-perimeter">perimeter</a> and <a href="{{ trUrl }}#dfn-single-pointer">single pointer</a>,
+            removing the period incorrectly appearing at the end of the definition
+            ({% gh "#4359" %})
+          </li>
+        </ul>
       </section>
     </section>