Fix incorrect condition in Discord appeal form banning status check.

frontend/src/app/pages/forms/discord-appeal/discord-appeal.component.html

@@ -65,7 +65,7 @@
                     <p>We were unable to find your punishment on our Discord server.</p>
                   </div>
                 </section>
-              } @else if (bannedUser.isBanned || bannedUser.bannedUser == null) {
+              } @else if (!bannedUser.isBanned || bannedUser.bannedUser == null) {
                 <section class="formPage">
                   <div class="description">
                     <p>Your discord account is not banned on our Discord server.</p>