update snippets 47-62

snippets/hammingDistance.md

@@ -8,5 +8,8 @@ Count and return the number of `1`s in the string, using `match(/1/g)`.
 ```js
 const hammingDistance = (num1, num2) =>
   ((num1 ^ num2).toString(2).match(/1/g) || '').length;
-// hammingDistance(2,3) -> 1
+```
+
+```js
+hammingDistance(2,3) -> 1
 ```