Tighten up prohibited_key method

lib/gitlab/import_export/attribute_cleaner.rb

@@ -28,11 +28,10 @@ module Gitlab
 
         return true if 'cached_markdown_version'.equal?(key)
 
-        prohibited_suffices = %w(_id _html)
-        prohibited_suffices.each do |suffix|
-          return true if key.end_with?(suffix)
+        prohibited_suffixes = %w(_id _html)
+        prohibited_suffixes.any? do |suffix|
+          true if key.end_with?(suffix)
         end
-        false
       end
 
       def allowed_reference?(key)