minor fixes

1-js/05-data-types/09-keys-values-entries/article.md

@@ -77,7 +77,7 @@ Objects lack many methods that exist for arrays, e.g. `map`, `filter` and others
 If we'd like to apply them, then we can use `Object.entries` followed by `Object.fromEntries`:
 
 1. Use `Object.entries(obj)` to get an array of key/value pairs from `obj`.
-2. Use array methods on that array, e.g. `map`, to transform key/value pairs.
+2. Use array methods on that array, e.g. `map`, to transform these key/value pairs.
 3. Use `Object.fromEntries(array)` on the resulting array to turn it back into an object.
 
 For example, we have an object with prices, and would like to double them:
@@ -98,6 +98,6 @@ let doublePrices = Object.fromEntries(
 */!*
 
 alert(doublePrices.meat); // 8
-```   
+```
 
 It may look difficult at first sight, but becomes easy to understand after you use it once or twice. We can make powerful chains of transforms this way.