Snippet format update

To match the starter (for the migration)

snippets/all.md

@@ -1,4 +1,7 @@
-### all
+---
+title: all
+tags: array,function,beginner
+---
 
 Returns `true` if the provided predicate function returns `true` for all elements in a collection, `false` otherwise.
 
@@ -12,4 +15,4 @@ const all = (arr, fn = Boolean) => arr.every(fn);
 ```js
 all([4, 2, 3], x => x > 1); // true
 all([1, 2, 3]); // true
-```
+```