Add space after dot (#23137)

guide/english/javascript/es6/for-of/index.md

@@ -17,7 +17,7 @@ for (const fruit of fruits)
 The above snippet is going to return us the items in the array above.
 
 ## for-of loop in knowing index
-What if we want to know the index of each item too.In that case we can iterate over fruits.entries() which gives us the ArrayIterator.
+What if we want to know the index of each item too. In that case we can iterate over fruits.entries() which gives us the ArrayIterator.
 
 ```javascript
 for (const fruit of fruits.entries())