Snippet format update

To match the starter (for the migration)

snippets/omit.md

@@ -1,4 +1,7 @@
-### omit
+---
+title: omit
+tags: object,array,intermediate
+---
 
 Omits the key-value pairs corresponding to the given keys from an object.
 
@@ -14,4 +17,4 @@ const omit = (obj, arr) =>
 
 ```js
 omit({ a: 1, b: '2', c: 3 }, ['b']); // { 'a': 1, 'c': 3 }
-```
+```