manager.rb in newrelic_rpm-8.10.0

- old
+ new

@@ -1,8 +1,9 @@
 # encoding: utf-8
 # This file is distributed under New Relic's license terms.
 # See https://github.com/newrelic/newrelic-ruby-agent/blob/main/LICENSE for complete details.
+# frozen_string_literal: true
 
 require 'forwardable'
 require 'new_relic/agent/configuration/mask_defaults'
 require 'new_relic/agent/configuration/yaml_source'
 require 'new_relic/agent/configuration/default_source'
@@ -20,10 +21,10 @@
         def [](key)
           @cache[key]
         end
 
         def has_key?(key)
-          @cache.has_key? key
+          @cache.has_key?(key)
         end
 
         def keys
           @cache.keys
         end