Fix children to be a prop in the blog post example

_posts/2015-12-18-react-components-elements-and-instances.md

@@ -70,9 +70,11 @@ When an element’s `type` is a string, it represents a DOM node with that tag n
     className: 'button button-blue',
     children: {
       type: 'b',
+      props: {
         children: 'OK!'
       }
     }
+  }
 }
 ```
 
@@ -191,9 +193,11 @@ React will ask `Button` what it renders to. The `Button` will return this elemen
     className: 'button button-blue',
     children: {
       type: 'b',
+      props: {
         children: 'OK!'
       }
     }
+  }
 }
 ```