feat: set discord link on footer

Author: FRLP

src/components/Footer.astro

@@ -15,13 +15,13 @@ import {
     <div>
       <ul>
         <li><b>Links</b></li>
-        <li><a href="https://discord.com/invite/jnZevNmYRg" class="link">参加する</a></li>
+        <li><a href="https://trans.stki.org/discord" class="link">参加する</a></li>
       </ul>
     </div>
     <div>
       <div><b>Social</b></div>
       <div class="grid grid-cols-3">
-        <a href="https://discord.gg/7AwHGrhf6z"><IconBrandDiscord /></a>
+        <a href="https://trans.stki.org/discord"><IconBrandDiscord /></a>
         <a href="https://github.com/Dev-TRANs"><IconBrandGithub /></a>
       </div>
     </div>