refactor : themeToggleButton bottom padding

Author: heesane

next/src/components/themeToggleButton.tsx

@@ -9,7 +9,7 @@ export const ThemeToggleButton = () => {
     const { theme, toggleTheme } = useTheme();
 
     return (
-      <div className="fixed right-4 bottom-4 text-sm"> {/* fixed 위치를 조정 */}
+      <div className="fixed right-4 bottom-7 text-sm"> {/* fixed 위치를 조정 */}
         <button
           onClick={toggleTheme}
           className="flex items-center gap-2 px-4 py-2 rounded-md bg-gray-200 dark:bg-gray-800 text-black dark:text-white shadow-lg transition-colors duration-200"