refactor: update className style in ShareLink

Author: satnaing

src/components/ShareLinks.astro

@@ -7,11 +7,7 @@ const URL = Astro.url;
 
 {
   SHARE_LINKS.length > 0 && (
-    <div
-      class:list={[
-        "flex flex-none flex-col items-center justify-center gap-1 md:items-start",
-      ]}
-    >
+    <div class="flex flex-none flex-col items-center justify-center gap-1 md:items-start">
       <span class="italic">Share this post on:</span>
       <div class="text-center">
         {SHARE_LINKS.map(social => (