Update concat.md

Improved description a little.

snippets/concat.md

@@ -1,6 +1,6 @@
 ### Concat
 
-Creates a new array concatenating array with any additional arrays and/or values `args` using `Array.concat()`.
+Use `Array.concat()` to concatenate and array with any additional arrays and/or values, specified in `args`.
 
 ```js
 const ArrayConcat = (arr, ...args) => arr.concat(...args);