chore: update avatar CDN to icons.folo.is (#147)

chore: update avatar CDN from unavatar.webp.se to icons.folo.is

- Update NamespaceList.vue to use new CDN domain
- Update NamespaceDetail.vue to use new CDN domain
- Remove fallback query parameter

Author: DIYgod

.vitepress/theme/components/NamespaceDetail.vue

@@ -3,7 +3,7 @@
     <div class="namespace-header">
       <div class="namespace-icon">
         <img
-          :src="`https://unavatar.webp.se/${namespace.url || currentNamespaceId + '.com'}?fallback=true`"
+          :src="`https://icons.folo.is/${namespace.url || currentNamespaceId + '.com'}`"
           :alt="namespace.name"
           @error="handleImageError"
         />

.vitepress/theme/components/NamespaceList.vue

@@ -64,7 +64,7 @@
       >
         <div class="namespace-icon">
           <img
-            :src="`https://unavatar.webp.se/${ns.url || ns.id + '.com'}?fallback=true`"
+            :src="`https://icons.folo.is/${ns.url || ns.id + '.com'}`"
             :alt="ns.name"
             @error="handleImageError"
           />