Snippet format update

To match the starter (for the migration)

snippets/getColonTimeFromDate.md

@@ -1,4 +1,7 @@
-### getColonTimeFromDate
+---
+title: getColonTimeFromDate
+tags: date,intermediate
+---
 
 Returns a string of the form `HH:MM:SS` from a `Date` object.
 
@@ -10,4 +13,4 @@ const getColonTimeFromDate = date => date.toTimeString().slice(0, 8);
 
 ```js
 getColonTimeFromDate(new Date()); // "08:38:00"
-```
+```