feat: border color 도 seed color 토큰으로 대체

Author: SeieunYoo

docs/components/iconography/icon-bottom-infomation.tsx

@@ -40,7 +40,7 @@ export const IconBottomInfomation = () => {
   );
 
   return (
-    <div className="flex justify-between fixed bottom-0 min-h-28 left-0 right-0 border-t border-gray-200 p-4 z-30 bg-fd-background">
+    <div className="flex justify-between fixed bottom-0 min-h-28 left-0 right-0 border-t border-fd-border p-4 z-30 bg-fd-background">
       <div className="flex flex-col justify-center gap-2">
         <div className="flex gap-4 items-end">
           <div