Snippet format update

To match the starter (for the migration)

snippets/bindKey.md

@@ -1,4 +1,7 @@
-### bindKey
+---
+title: bindKey
+tags: function,object,intermediate
+---
 
 Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments.
 
@@ -19,4 +22,4 @@ const freddy = {
 };
 const freddyBound = bindKey(freddy, 'greet');
 console.log(freddyBound('hi', '!')); // 'hi fred!'
-```
+```