fix example: Props/Default values

Updated example code for calling component w/o props to show the default taking effect

site/content/tutorial/03-props/02-default-values/text.md

@@ -13,6 +13,5 @@ We can easily specify default values for props:
 If we now instantiate the component without an `answer` prop, it will fall back to the default:
 
 ```html
-<Nested answer={42}/>
+<Nested />
-<Nested/>
 ```