Update 07_day_functions.md (Line 238 and 250)

Unlimited number of parameters, needs to add ". . . arguments" inside the square bracket.

07_Day_Functions/07_day_functions.md

@@ -235,7 +235,7 @@ Sometimes we do not know how many arguments the user going to pass. Therefore, w
  ```js
 // Let us access the arguments object
 ​
-function sumAllNums() {
+function sumAllNums(...arguments) {
   console.log(arguments)
 }
 
@@ -247,7 +247,7 @@ sumAllNums(1, 2, 3, 4)
 ```js
 // function declaration
 ​
-function sumAllNums() {
+function sumAllNums(...arguments) {
   let sum = 0
   for (let i = 0; i < arguments.length; i++) {
     sum += arguments[i]