fix: change the avatar mirror.

options.ts

@@ -186,7 +186,7 @@ const options: z.input<typeof Options> = {
       server: 'https://comment.yufan.me',
       size: 10,
       avatar: {
-        mirror: 'https://gravatar.webp.se/avatar',
+        mirror: 'https://weavatar.com/avatar',
         size: 120,
       },
     },

src/pages/avatar/[hash].webp.ts

@@ -18,7 +18,7 @@ const avatarImage = async (
   const defaultAvatarLink = defaultAvatar();
   const link = urlJoin(
     options.settings.comments.avatar.mirror,
-    `${hash}?s=${options.settings.comments.avatar.size}&d=${defaultAvatarLink}`,
+    `${hash}.webp?s=${options.settings.comments.avatar.size}&d=${defaultAvatarLink}`,
   );
 
   const resp = await fetch(link, { redirect: 'manual', headers: { Referer: options.website } });