Add better comment for dynamic module structure for DynamicContentWid…

…getCustomDesigner

DynamicContentWidgetCustomDesigner/readme.md

@@ -1,4 +1,4 @@
-Create custom designer for dynamic content widget
+Create custom designer for dynamic content widget
 =====================================
 
 All Sitefinity and Feather widgets have designers where you configure widget properties. 
@@ -7,7 +7,7 @@ For more information on creating custom designer view for content controls,
 see [Feather: Create custom designer views](http://docs.sitefinity.com/feather-create-custom-designer-views).
 
 This sample requires you to create a dynamic type Countries to work.
-It has to have a singilar item Country with two properties of type short text - Title and Continent.
+It has to have a value for *Content type (singular)* set to *Country*, with two properties of type short text - Title and Continent.
 You can use the structure and the items for the Countries module by using the Countries.zip file for the structure and the Default_Countries_items.xlsx for the items.
 
 Create the template file