Fix a few broken links to CSS specs from the event loop

Notably, the unversioned web-animations URL seems to point to an unofficial draft that no longer contains the relevant definition.

Author: domenic

source

@@ -3793,7 +3793,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
     </ul>
 
     <p>The algorithm to <dfn
-    data-x-href="https://drafts.csswg.org/web-animations/#update-animations-and-send-events">update
+    data-x-href="https://drafts.csswg.org/web-animations-1/#update-animations-and-send-events">update
     animations and send events</dfn> is defined in <cite>Web Animations</cite>. <ref
     spec=WEBANIMATIONS>.</p>
 
@@ -3836,8 +3836,8 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
      <li><dfn data-x-href="https://drafts.csswg.org/cssom/#preferred-css-style-sheet-set-name">preferred CSS style sheet set name</dfn></li>
      <li><dfn data-x-href="https://drafts.csswg.org/cssom/#change-the-preferred-css-style-sheet-set-name">change the preferred CSS style sheet set name</dfn></li>
      <li><dfn data-x-href="https://drafts.csswg.org/cssom/#serialize-a-css-value">Serializing a CSS value</dfn></li>
-     <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#run-the-resize-steps">run the resize steps</dfn></li>
-     <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#run-the-scroll-steps">run the scroll steps</dfn></li>
+     <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#document-run-the-resize-steps">run the resize steps</dfn></li>
+     <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#document-run-the-scroll-steps">run the scroll steps</dfn></li>
      <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#evaluate-media-queries-and-report-changes">evaluate media queries and report changes</dfn></li>
      <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#scroll-an-element-into-view">Scroll an element into view</dfn></li>
      <li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#scroll-to-the-beginning-of-the-document">Scroll to the beginning of the document</dfn></li>
@@ -127900,7 +127900,7 @@ INSERT INTERFACES HERE
    <dd>(Non-normative) <cite><a href="https://w3c.github.io/wcag/guidelines/">Web Content Accessibility Guidelines (WCAG)</a></cite>, A. Kirkpatrick, J. O Connor, A. Campbell, M. Cooper. W3C.</dd>
 
    <dt id="refsWEBANIMATIONS">[WEBANIMATIONS]</dt>
-   <dd><cite><a href="https://drafts.csswg.org/web-animations/">Web Animations</a></cite>, B. Birtles, S. Stephens, D. Stockwell. W3C.</dd>
+   <dd><cite><a href="https://drafts.csswg.org/web-animations-1/">Web Animations</a></cite>, B. Birtles, S. Stephens, D. Stockwell. W3C.</dd>
 
    <dt id="refsWEBAUDIO">[WEBAUDIO]</dt>
    <dd>(Non-normative) <cite><a href="https://webaudio.github.io/web-audio-api/">Web Audio API</a></cite>, P. Adenot, H. Choi. W3C.</dd>