update snippets 0-All

snippets/shallowClone.md

@@ -6,9 +6,10 @@ Use `Object.assign()` and an empty object (`{}`) to create a shallow clone of th
 
 ```js
 const shallowClone = obj => Object.assign({}, obj);
-/*
+```
+
+```js
 const a = { x: true, y: 1 };
 const b = shallowClone(a);
 a === b -> false
-*/
 ```