Update snippet descriptions

snippets/uniqueElements.md

@@ -3,9 +3,10 @@ title: uniqueElements
 tags: array,beginner
 ---
 
-Returns all unique values in an array.
+Finds all unique values in an array.
 
-- Create a `Set` from the given array to discard duplicated values, then use the spread operator (`...`) to convert it back to an array.
+- Create a `new Set()` from the given array to discard duplicated values.
+- Use the spread operator (`...`) to convert it back to an array.
 
 ```js
 const uniqueElements = arr => [...new Set(arr)];