Fix: DevHeader 컴포넌트 변경

Author: pwc2002

src/components/ui/common/DevHeader.jsx

@@ -5,7 +5,7 @@ export default function DevHeader() {
     <>
         <div className="fixed top-0 left-0 w-full h-8 bg-transparent text-red-500" style={{zIndex: 999999}}>
             <div className="flex justify-between items-center">
-                <div className="text-2xl font-bold">Dev 서버입니다</div>
+                <div className="text-2xl font-bold">Dev 서버입니다.</div>
             </div>
         </div>
     </>