Fix overwritten project.cluster replacement

spec/controllers/projects/clusters_controller_spec.rb

@@ -205,7 +205,7 @@ describe Projects::ClustersController do
           go
 
           cluster.reload
-          expect(response).to redirect_to(project_cluster_path(project, project.cluster))
+          expect(response).to redirect_to(project_cluster_path(project, cluster))
           expect(flash[:notice]).to eq('Cluster was successfully updated.')
           expect(cluster.enabled).to be_falsey
         end