Snippet format update

To match the starter (for the migration)

snippets/toHash.md

@@ -1,4 +1,7 @@
-### toHash
+---
+title: toHash
+tags: array,intermediate
+---
 
 Reduces a given Array-like into a value hash (keyed data store).
 
@@ -27,4 +30,4 @@ managers.forEach(
     }, toHash(users, 'id')))
 );
 managers; // [ { manager:1, employees: [ { id: 2, first: "Joe" }, { id: 3, first: "Moe" } ] } ]
-```
+```