fix: restore benchmark RuboCop baseline

Author: kholdrex

benchmarks/convergence_benchmark.rb

@@ -223,7 +223,7 @@ def generate_data(num_people, num_items, difficulty_range: (-2..2), ability_rang
   # Generate data with missing values
   base_data = generate_data(100, 50)[:data]
 
-  data_with_missing = if (config[:rate]).positive?
+  data_with_missing = if config[:rate].positive?
                         base_data.map do |row|
                           row.map { |resp| rand < config[:rate] ? nil : resp }
                         end