contents/index: update sponsors

Author: hajimehoshi

contents/index.html

@@ -123,6 +123,12 @@ <h3>Silver</h3>
       <figcaption><a href="https://github.com/masoudarvishian">Masoud Darvishian</a></figcaption>
     </figure>
   </div>
+  <div class="grid-item-1">
+    <figure>
+      <p class="img avatar"><a href="https://github.com/michael-baraboo"><img src="https://github.com/michael-baraboo.png?size=168" width="168"></a></p>
+      <figcaption><a href="https://github.com/michael-baraboo">michael-baraboo</a></figcaption>
+    </figure>
+  </div>
 </div>
 <p class="img" style="justify-content: start;">
   <iframe src="https://github.com/sponsors/hajimehoshi/button" title="Sponsor hajimehoshi" height="35" width="116" style="border: 0;"></iframe>

contents/ja/index.html

@@ -124,6 +124,12 @@ <h3>シルバー</h3>
       <figcaption><a href="https://github.com/masoudarvishian">Masoud Darvishian</a></figcaption>
     </figure>
   </div>
+  <div class="grid-item-1">
+    <figure>
+      <p class="img avatar"><a href="https://github.com/michael-baraboo"><img src="https://github.com/michael-baraboo.png?size=168" width="168"></a></p>
+      <figcaption><a href="https://github.com/michael-baraboo">michael-baraboo</a></figcaption>
+    </figure>
+  </div>
 </div>
 <p class="img" style="justify-content: start;">
   <iframe src="https://github.com/sponsors/hajimehoshi/button" title="Sponsor hajimehoshi" height="35" width="116" style="border: 0;"></iframe>