Update "Cookies, document.cookie" article

Author: odsantos

6-data-storage/01-cookie/article.md

@@ -156,7 +156,7 @@ If we set `expires` to a date in the past, the cookie is deleted.
 
 -  **`max-age=3600`**
 
-Is an alternative to `expires` and specifies the cookie's expiration in seconds from the current moment.
+It's an alternative to `expires` and specifies the cookie's expiration in seconds from the current moment.
 
 If set to zero or a negative value, the cookie is deleted:
 
@@ -282,7 +282,6 @@ Here's a small set of functions to work with cookies, more convenient than a man
 
 There exist many cookie libraries for that, so these are for demo purposes. Fully working though.
 
-
 ### getCookie(name)
 
 The shortest way to access a cookie is to use a [regular expression](info:regular-expressions).