Code-style long line

ee/lib/ee/gitlab/prometheus/metric_group.rb

@@ -5,7 +5,8 @@ module EE
         module ClassMethods
           def custom_metrics(project)
             project.prometheus_metrics.all.group_by(&:group_title).map do |name, metrics|
-              ::Gitlab::Prometheus::MetricGroup.new(name: name, priority: 0, metrics: metrics.map(&:to_query_metric))
+              ::Gitlab::Prometheus::MetricGroup.new(
+                name: name, priority: 0, metrics: metrics.map(&:to_query_metric))
             end
           end