Snippet format update

To match the starter (for the migration)

snippets/JSONToFile.md

@@ -1,4 +1,7 @@
-### JSONToFile
+---
+title: JSONToFile
+tags: node,json,intermediate
+---
 
 Writes a JSON object to a file.
 
@@ -12,4 +15,4 @@ const JSONToFile = (obj, filename) =>
 
 ```js
 JSONToFile({ test: 'is passed' }, 'testJsonFile'); // writes the object to 'testJsonFile.json'
-```
+```