feat(blog): move proof order in reference value

src/contents/blog/swift-value-reference.mdx

@@ -207,6 +207,33 @@ Key Point: **It will share a single copy**
  height={659}
 />
 
+### Effect of Sharing A Single Copy
+
+I believe you already guessed correctly how it will behave. If we **mutate** one variable, **both will be affected**.
+
+```swift {8,9,11,12}
+class Animal {
+ var legs = 4
+}
+
+var sheep = Animal()
+var cow = sheep
+
+// mutating cow's property
+cow.legs = 3
+
+print(sheep.legs) // 3
+print(cow.legs) // 3
+```
+
+<CloudinaryImg
+ mdx
+ publicId='theodorusclarence/blogs/swift-value-reference/reference-copy-effect_khsni9'
+ alt='reference-copy-effect'
+ width={824}
+ height={444}
+/>
+
 ### Proof
 
 To prove that it is sharing a single copy, we can use `===` ([identity equality](https://developer.apple.com/documentation/swift/1538988)). It will return true if two reference point to the same object instance.
@@ -240,33 +267,6 @@ print(sheep === newSheep) // false
 
 When in doubt, draw the wire analogy to help you. I'm using [excalidraw](https://excalidraw.com/) for the illustration
 
-### Effect of Sharing A Single Copy
-
-I believe you already guessed correctly how it will behave. If we **mutate** one variable, **both will be affected**.
-
-```swift {8,9,11,12}
-class Animal {
- var legs = 4
-}
-
-var sheep = Animal()
-var cow = sheep
-
-// mutating cow's property
-cow.legs = 3
-
-print(sheep.legs) // 3
-print(cow.legs) // 3
-```
-
-<CloudinaryImg
- mdx
- publicId='theodorusclarence/blogs/swift-value-reference/reference-copy-effect_khsni9'
- alt='reference-copy-effect'
- width={824}
- height={444}
-/>
-
 ## Additional Emphasize
 
 I need to emphasize this in case you're coming from **a JavaScript** background.