Update README.md

The-Judge · web-flow · commit 17e729096dde · 2017-10-13T09:31:56.000+02:00
Added 'templates' folder to the tree view, since this might be confusing for some people.
diff --git a/en/css/README.md b/en/css/README.md
@@ -46,7 +46,8 @@ We do that by creating a folder called `static` inside the blog app:
 djangogirls
 ├── blog
 │   ├── migrations
-│   └── static
+│   ├── static
+│   └── templates
 └── mysite
 ```
 
