Adjust links to reflect the move into the WICG account

Author: theres-waldo

Overview.bs

@@ -4,7 +4,7 @@ Title: Scroll-linked Animations
 Group: CSSWG
 Status: UD
 Work Status: exploring
-ED: https://birtles.github.io/scroll-animations/
+ED: https://wicg.github.io/scroll-animations/
 Shortname: scroll-animations
 Abstract: Defines an API and markup for creating animations that are either
           triggered by or tied to the scroll offset of a scroll container.
@@ -54,7 +54,7 @@ provided it behaves as if the underlying programming interfaces were in place.
 <em>This section is non-normative</em>
 
 Note: Based on this <a
-href="https://github.com/birtles/scroll-animations/blob/master/Use%20cases.md">curated
+href="https://github.com/WICG/scroll-animations/blob/master/Use%20cases.md">curated
 list of use cases</a>.
 
 ## Scroll-triggered animations ## {#scroll-triggered-animations-usecases}

index.html

@@ -261,7 +261,7 @@ <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="cont
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version:
-     <dd><a class="u-url" href="https://birtles.github.io/scroll-animations/">https://birtles.github.io/scroll-animations/</a>
+     <dd><a class="u-url" href="https://wicg.github.io/scroll-animations/">https://wicg.github.io/scroll-animations/</a>
      <dt>Issue Tracking:
      <dd><a href="#issues-index">Inline In Spec</a>
      <dd><span><a href="https://github.com/w3c/csswg-drafts/labels/scroll-animations">GitHub Issues</a></span>
@@ -383,7 +383,7 @@ <h3 class="heading settled" data-level="1.1" id="other-specs"><span class="secno
 provided it behaves as if the underlying programming interfaces were in place.</p>
    <h2 class="heading settled" data-level="2" id="use-cases"><span class="secno">2. </span><span class="content">Use cases</span><a class="self-link" href="#use-cases"></a></h2>
    <p><em>This section is non-normative</em></p>
-   <p class="note" role="note">Note: Based on this <a href="https://github.com/birtles/scroll-animations/blob/master/Use%20cases.md">curated
+   <p class="note" role="note">Note: Based on this <a href="https://github.com/WICG/scroll-animations/blob/master/Use%20cases.md">curated
 list of use cases</a>.</p>
    <h3 class="heading settled" data-level="2.1" id="scroll-triggered-animations-usecases"><span class="secno">2.1. </span><span class="content">Scroll-triggered animations</span><a class="self-link" href="#scroll-triggered-animations-usecases"></a></h3>
    <h4 class="heading settled" data-level="2.1.1" id="navigation-bar-shrinking-effect"><span class="secno">2.1.1. </span><span class="content">Navigation bar shrinking effect</span><a class="self-link" href="#navigation-bar-shrinking-effect"></a></h4>