feat: 英語訳も追加

Author: staticWagomU

2025/src/pages/en.astro

@@ -58,6 +58,12 @@ import Layout from '@/layouts/Layout.astro';
       Please consider supporting us to make this event possible.<br />
         <em>※ Individual sponsorships are also available. (Please note that sponsorships are non-refundable even if the event is canceled)</em>
       </p>
+      <p>
+        If you would like to support us as a personal sponsor, please follow the link below.
+      </p>
+      <p style="text-align: center;">
+        <a class="btn" href="https://vimconf.booth.pm/" target="blank">become a personal sponsor</a>
+      </p>
       <p>
         <b>As this is our first initiative of this kind,</b> please don't hesitate to contact us with any questions or concerns.
       </p>