Fix paragraph on publish_date when creating post.

The published_date is clearly set, fixed documentation to follow code behavior.

Author: henziger

en/django_forms/README.md

@@ -231,7 +231,7 @@ def post_new(request):
 
 Let's see if it works. Go to the page http://127.0.0.1:8000/post/new/, add a `title` and `text`, save it... and voilà! The new blog post is added and we are redirected to `post_detail` page!
 
-You problably have noticed that we are not setting publish date at all. We will introduce a _publish button_ in __Django Girls Tutorial: Extensions__.
+You might have noticed that we are setting publish date before saving the post. Later on, we will introduce a _publish button_ in __Django Girls Tutorial: Extensions__.
 
 That is awesome!