How to Quick Edit a WordPress Post
If you want to change the title, slug, publish date or add your post to a category, you can use the Quick Edit function and make this change directly from the All Posts Screen.
To do this, hover over your post title and a new menu items will reveal themselves directly below the title. Click Quick Edit from this menu.
Quick edit options will let you change title, slug, publish date or let you add your post to a category.
Make your changes and click update to save your new post.
Tip: If your site has been indexed by Google or Bing etc, be very careful editing your post slug. Webmaster Tools will report your missing post if you change the slug.