fix(api-builder): correctly import github and params helpers

Author: IgorMinar

tools/api-builder/angular.io-package/templates/pipe.template.html

@@ -1,5 +1,5 @@
-{% include "lib/githubLinks.html" -%}
-{% include "lib/paramList.html" -%}
+{% import "lib/githubLinks.html" as github -%}
+{% import "lib/paramList.html" as params -%}
 {% extends 'layout/base.template.html' -%}
 
 {% block body %}
@@ -24,6 +24,6 @@
 
 p(class="location-badge").
   exported from {@link {$ doc.moduleDoc.id $} {$doc.moduleDoc.id $} }
-  defined in {$ githubViewLink(doc) $}
+  defined in {$ github.githubViewLink(doc) $}
 
-{% endblock %}
+{% endblock %}