Fixed failing rubocop

app/graphql/mutations/notes/create/diff_note.rb

@@ -18,11 +18,12 @@ module Mutations
           # This may be able to be done using InputUnions in the future
           # if this RFC is merged:
           # https://github.com/graphql/graphql-spec/blob/master/rfcs/InputUnion.md
+
           if args[:position].to_hash.values_at(:old_line, :new_line).compact.blank?
             raise Gitlab::Graphql::Errors::ArgumentError,
                   'position oldLine or newLine arguments are required'
           end
-  
+
           super(**args)
         end