update snippets 78 - 96

snippets/powerset.md

@@ -7,5 +7,8 @@ Use `Array.reduce()` combined with `Array.map()` to iterate over elements and co
 ```js
 const powerset = arr =>
   arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
-// powerset([1,2]) -> [[], [1], [2], [2,1]]
+```
+
+```js
+powerset([1,2]) -> [[], [1], [2], [2,1]]
 ```