Change "rest operator" to say "rest parameter" in challenges and guide (#35496)

* change es6 challenges rest operator to param

* fix rest parameter typos

* change rest operator to parameter in guide

* fix casing

* change rest operator to rest parameter in guide

* change rest operator to rest parameter in curriculum

* remove extra whitespace

* remove whitespaces

* remove whitespace

* fix: removed arabic file

* fix: removed chinese file

guide/english/certifications/javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-with-the-rest-parameter-to-reassign-array-elements/index.md

@@ -1,11 +1,10 @@
 ---
-title: Use Destructuring Assignment with the Rest Operator to Reassign Array Elements
+title: Use Destructuring Assignment with the Rest Parameter to Reassign Array Elements
 ---
-## Use Destructuring Assignment with the Rest Operator to Reassign Array Elements
+## Use Destructuring Assignment with the Rest Parameter to Reassign Array Elements
+Remember that the rest parameter allows for variable numbers of arguments. In this challenge, you have to get rid of the first two elements of an array.
 
-Remember that the rest operator allows for variable numbers of arguments. In this challenge, you have to get rid of the first two elements of an array.
-
-## Hint 1: 
+## Hint 1:
 
 Assign the first two elements to two random variables.
 
@@ -39,8 +38,8 @@ function removeFirstTwo(list) {
   // change code above this line
   return arr;
 }
-```
 
+```
 
 ## Spoiler Alert - Solution Ahead!
 You can use random variables to omit the first two values:
@@ -67,7 +66,7 @@ const source = [1,2,3,4,5,6,7,8,9,10];
 function removeFirstTwo(list) {
   "use strict";
   // change code below this line
-  const [,,...arr] = list; // change this
+  const [a, b, ...arr] = list;
   // change code above this line
   return arr;
 }

guide/english/certifications/javascript-algorithms-and-data-structures/es6/use-the-rest-parameter-with-function-parameters/index.md

@@ -1,7 +1,7 @@
 ---
-title: Use the Rest Operator with Function Parameters
+title: Use the Rest Parameter with Function Parameters
 ---
-## Use the Rest Operator with Function Parameters
+## Use the Rest Parameter with Function Parameters
 
 ###  Rest parameter explanation
 [Mozilla Developer Network](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters "Mozilla Developer Network")
@@ -13,7 +13,7 @@ title: Use the Rest Operator with Function Parameters
 
 <a href="http://www.youtube.com/watch?feature=player_embedded&v=iLx4ma8ZqvQ
 " target="_blank"><img src="http://img.youtube.com/vi/iLx4ma8ZqvQ/0.jpg" 
-alt="Image of youtube video link spread and rest operator " width="240" height="180" border="10" /></a>
+alt="Image of youtube video link spread and rest parameter " width="240" height="180" border="10" /></a>
 
 ### Example
 This code

guide/english/certifications/javascript-algorithms-and-data-structures/es6/use-the-spread-operator-to-evaluate-arrays-in-place/index.md

@@ -12,7 +12,7 @@ title: Use the Spread Operator to Evaluate Arrays In-Place
 ### Video Explaining Spread Operator and Rest Parameter
 <a href="http://www.youtube.com/watch?feature=player_embedded&v=iLx4ma8ZqvQ
 " target="_blank"><img src="http://img.youtube.com/vi/iLx4ma8ZqvQ/0.jpg" 
-alt="Image of youtube video link spread and rest operator " width="240" height="180" border="10" /></a>
+alt="Image of youtube video link spread and rest parameter " width="240" height="180" border="10" /></a>
 
 ### Information About apply() Method
 [Mozilla Developer Network Apply Method](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply "Mozilla Developer Network")