docs: update README

README.md

@@ -129,16 +129,48 @@ Support this project by becoming a sponsor. Your name will show up in the Contri
 
 Support this project by becoming a sponsor. Your logo will show up in the Contribute page of all Wiki.js installations as well as here with a link to your website! [[Become a sponsor](https://opencollective.com/wikijs#sponsor)]
 
-<a href="https://opencollective.com/wikijs/sponsor/0/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/0/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/1/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/1/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/2/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/2/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/3/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/3/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/4/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/4/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/5/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/5/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/6/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/6/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/7/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/7/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/8/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/8/avatar.svg"></a>
-<a href="https://opencollective.com/wikijs/sponsor/9/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/9/avatar.svg"></a>
+<div align="center">
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/0/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/0/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/1/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/1/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/2/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/2/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/3/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/3/avatar.svg"></a>
+      </td>
+    </tr>
+    <tr>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/4/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/4/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/5/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/5/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/6/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/6/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/7/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/7/avatar.svg"></a>
+      </td>
+    </tr>
+    <tr>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/8/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/8/avatar.svg"></a>
+      </td>
+      <td align="center" valign="middle" width="192">
+        <a href="https://opencollective.com/wikijs/sponsor/9/website" target="_blank"><img src="https://opencollective.com/wikijs/sponsor/9/avatar.svg"></a>
+      </td>
+    </tr>
+  </tbody>
+</table>
+</div>
 
 <h2 align="center">Patreon Backers</h2>