Updated linter to work with restructure

snippets/symmetricDifference.md

@@ -8,7 +8,7 @@ Create a `Set` from each array, then use `Array.filter()` on each of them to onl
 const symmetricDifference = (a, b) => {
   const sA = new Set(a), sB = new Set(b);
   return [...a.filter(x => !sB.has(x)), ...b.filter(x => !sA.has(x))];
-}
+};
 ```
 
 ```js