fix search-facets on group page

ckanext/hierarchy/groups_hierarchy/group/read.html

@@ -2,7 +2,7 @@
 
 {% if q is not defined %}{% set q = c.q %}{% endif %}
 {% if fields_grouped is not defined %}{% set fields_grouped = c.fields_grouped %}{% endif %}
-{% if search_facetssearch_facets is not defined %}{% set search_facets = c.search_facets %}{% endif %}
+{% if search_facets is not defined %}{% set search_facets = c.search_facets %}{% endif %}
 {% if facet_titles is not defined %}{% set facet_titles = c.facet_titles %}{% endif %}
 {% if translated_fields is not defined %}{% set translated_fields = c.translated_fields %}{% endif %}
 {% if remove_field is not defined %}{% set remove_field = c.remove_field %}{% endif %}