docs(dgeni): Fix an extra newline in the markdown for type.

docs/angular.io-package/templates/class.template.html

@@ -8,7 +8,7 @@ p.location-badge.
   defined in {$ githubViewLink(doc) $}
 
 :markdown
-{$ doc.description | indent(2, true) | trimBlankLines $}
+{$ doc.moduleDoc.description | indent(2, true) | trimBlankLines $}
 
 {%- if doc.decorators %}
 .l-main-section
@@ -59,4 +59,4 @@ p.location-badge.
 {% endif %}{% endfor %}
 {%- endif -%}
 
-{% endblock %}
+{% endblock %}