Snippet format update

To match the starter (for the migration)

snippets/createElement.md

@@ -1,4 +1,7 @@
-### createElement
+---
+title: createElement
+tags: browser,utility,beginner
+---
 
 Creates an element from a string (without appending it to the document). 
 If the given string contains multiple elements, only the first one will be returned.
@@ -22,4 +25,4 @@ const el = createElement(
   </div>`
 );
 console.log(el.className); // 'container'
-```
+```