fixed

1-js/04-object-basics/01-object/3-is-empty/solution.md

@@ -2,7 +2,7 @@ Just loop over the object and `return false` immediately if there's at least one
 
 ```js
 function isEmpty(obj) {
-  for(let key in obj) {
+  for (let key in obj) {
     return false;
   }
   return true;

1-js/04-object-basics/01-object/5-sum-object/solution.md

@@ -4,10 +4,10 @@ let salaries = {
   John: 100,
   Ann: 160,
   Pete: 130
-}
+};
 
 let sum = 0;
-for(let key in salaries) {
+for (let key in salaries) {
   sum += salaries[key];
 }