fix(ngdoc/macros): use type.name to display the directive parameter types

See angular/angular.js#11415

Closes #120

Author: petebacondarwin

ngdoc/templates/lib/macros.html

@@ -35,8 +35,8 @@
 
 {%- macro directiveParam(name, type, join, sep) %}
   {%- if type.optional %}[{% endif -%}
-  {$ name | dashCase $}{$ join $}{$ type.description $}{$ sep $}
-  {%- if type.optional %}]{% endif -%}
+  {$ name | dashCase $}{$ join $}{$ type.name $}{$ sep $}
+{%- if type.optional %}]{% endif -%}
 {% endmacro -%}
 
 {%- macro functionSyntax(fn) %}