Snippet format update

To match the starter (for the migration)

snippets/indentString.md

@@ -1,4 +1,7 @@
-### indentString
+---
+title: indentString
+tags: string,utility,beginner
+---
 
 Indents each line in the provided string.
 
@@ -12,4 +15,4 @@ const indentString = (str, count, indent = ' ') => str.replace(/^/gm, indent.rep
 ```js
 indentString('Lorem\nIpsum', 2); // '  Lorem\n  Ipsum'
 indentString('Lorem\nIpsum', 2, '_'); // '__Lorem\n__Ipsum'
-```
+```