Merge branch 'justanshulsharma-activerecord-merge-docs'

activerecord/lib/active_record/relation/merger.rb

@@ -13,7 +13,7 @@ def initialize(relation, hash)
         @hash     = hash
       end
 
-      def merge
+      def merge #:nodoc:
         Merger.new(relation, other).merge
       end