chore: replace Twitter icons (#1425)

Author: spider-hand

packages/lit-dev-content/site/_includes/article.html

@@ -30,8 +30,8 @@
               <div class="links">
                 {% if authorData.links.twitter %}
                   <a href="https://twitter.com/{{ authorData.links.twitter }}" target="_blank">
-                    <svg aria-label="{{ authorData.name}}'s Twitter Account">
-                      <use href="{{ site.baseurl }}/images/social/twitter.svg#twitter"></use>
+                    <svg aria-label="{{ authorData.name}}'s X Account">
+                      <use href="{{ site.baseurl }}/images/social/x.svg#x"></use>
                     </svg>
                   </a>
                 {% endif %}

packages/lit-dev-content/site/_includes/footer.html

@@ -48,15 +48,15 @@
       </a>
 
       <a
-        href="https://twitter.com/buildWithLit"
+        href="https://x.com/buildWithLit"
         target="_blank"
         rel="noopener"
-        title="Twitter"
-        aria-label="Twitter"
+        title="X"
+        aria-label="X"
       >
         <lazy-svg
-          href="{{ site.baseurl }}/images/social/twitter.svg#twitter"
-          label="Twitter"
+          href="{{ site.baseurl }}/images/social/x.svg#x"
+          label="X"
           loading="visible">
         </lazy-svg>
       </a>