rename lambda references to use shorthand syntax

app/models/news_update.rb

@@ -1,5 +1,5 @@
 class NewsUpdate < ApplicationRecord
   belongs_to_creator
   belongs_to_updater
-  scope :recent, lambda {where("created_at >= ?", 2.weeks.ago).order("created_at desc").limit(5)}
+  scope :recent, -> {where("created_at >= ?", 2.weeks.ago).order("created_at desc").limit(5)}
 end