Document typedefs and enums used by API symbols

It is no longer necessary to add api annotations to typedefs and enums
that are used by API symbols.

config/jsdoc/api/template/tmpl/tutorial.tmpl

@@ -1,5 +1,5 @@
 <section>
-    
+
 <header>
     <?js if (children.length > 0) { ?>
     <ul><?js
@@ -10,10 +10,10 @@
     <?js } ?>
 
     <h2><?js= header ?></h2>
-</header>  
+</header>
 
 <article>
     <?js= content ?>
 </article>
 
-</section>  
+</section>