Update apply method of function in Javascript (#6820)

updated "apply" description before without content.

src/data/roadmaps/javascript/content/apply@-BtF34cEzI6J8sZCDRlRE.md

@@ -1 +1,20 @@
 # apply
+
+The apply() method of Function instances calls this function with a given this value, and arguments provided as an array (or an array-like object).
+
+```js
+const numbers = [5, 6, 2, 3, 7];
+
+const max = Math.max.apply(null, numbers);
+
+console.log(max);
+// Expected output: 7
+
+const min = Math.min.apply(null, numbers);
+
+console.log(min);
+// Expected output: 2
+```
+Visit the following resources to learn more:
+
+- [@official@apply() - MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply)