Apply suggestions from code review

Author: josevalim

ruby/with_lambdas.rb

@@ -32,11 +32,11 @@
 reset_lesson_position = lambda {|lessons| lessons.each.with_index(1) { |lesson, index|  lesson.merge!(position: index) } }
 
 modify_section = lambda do |section, indexed_lessons|
-lessons = section[:reset_lesson_position] ? reset_lesson_position.call(section[:lessons]) : indexed_lessons
-section.merge!(lessons: lessons) 
+  lessons = section[:reset_lesson_position] ? reset_lesson_position.call(section[:lessons]) : indexed_lessons
+  section.merge!(lessons: lessons) 
 end
 
-indexed_sections = sections.flat_map{ _1[:lessons] }.each.with_index(1) { |a, index|  a.merge!(position: index)}
+indexed_sections = sections.flat_map{ _1[:lessons] }.each.with_index(1) { |a, index|  a.merge!(position: index) }
 sections.map { |section| modify_section.call(section, indexed_sections.shift(section[:lessons].count)) }
 
-puts JSON.pretty_generate(sections)
+puts JSON.pretty_generate(sections)