Refactor Box component usage in documentation

Author: Yesom-Lee

apps/landing/src/app/(detail)/docs/devup/breakpoints/page.mdx

@@ -22,7 +22,11 @@ value in the array are listed below:
 
 ```tsx
 const box = (
-  <Box bg={['red', 'blue', 'green', 'yellow', 'purple', 'orange']} h={25} w={25}>
+  <Box
+    bg={['red', 'blue', 'green', 'yellow', 'purple', 'orange']}
+    h={25}
+    w={25}
+  >
     <Text>Hello</Text>
   </Box>
 )