add a parenthesis for a typo in 01_javascript_refresher.md

I saw the typo 
console.log(index  //2
it should be => console.log(index) //2

01_Day_JavaScript_Refresher/01_javascript_refresher.md

@@ -3717,7 +3717,7 @@ Let us find the index of the first country in the array which has exactly six ch
 ```js
 const countries = ['Finland', 'Estonia', 'Sweden', 'Norway', 'Iceland']
 const index = countries.findIndex((country) => country.length === 6)
-console.log(index //2
+console.log(index) //2
 ```
 
 Let us find the index of the first country in the array which has the letter 'o'.
@@ -3725,7 +3725,7 @@ Let us find the index of the first country in the array which has the letter 'o'
 ```js
 const countries = ['Finland', 'Estonia', 'Sweden', 'Norway', 'Iceland']
 const index = countries.findIndex((country) => country.includes('o'))
-console.log(index // 1
+console.log(index) // 1
 ```
 
 Let us move on to the next functional programming, some.