Merge pull request #26653 from Neodelf/new_branch_name

[ci skip] Use right format text

activerecord/lib/active_record/attribute_methods/serialization.rb

@@ -26,7 +26,7 @@ module ClassMethods
         # ==== Parameters
         #
         # * +attr_name+ - The field name that should be serialized.
-        # * +class_name_or_coder+ - Optional, a coder object, which responds to `.load` / `.dump`
+        # * +class_name_or_coder+ - Optional, a coder object, which responds to +.load+ and +.dump+
         #   or a class name that the object type should be equal to.
         #
         # ==== Example