update method name in documentation (#5836)
update method name in documentation (#5836)

resource -> find_resource
activeadmin/activeadmin,deivid-rodriguez/activeadmin,javierjulio/activeadmin,activeadmin/activeadmin,vraravam/activeadmin,vraravam/activeadmin,javierjulio/activeadmin,vraravam/activeadmin,deivid-rodriguez/activeadmin,activeadmin/activeadmin,javierjulio/activeadmin,deivid-rodriguez/activeadmin