style: correct coding style with rubocop linter

lib/tasks/tickets.rake

@@ -11,7 +11,7 @@ namespace :tickets do
     total_drafts = Ticket.draft.count
     expired_drafts = Ticket.expired_drafts.count
     retryable_drafts = Ticket.can_retry_payment.count
-    
+
     puts "=== Draft Ticket Statistics ==="
     puts "Total draft tickets: #{total_drafts}"
     puts "Expired draft tickets: #{expired_drafts}"
@@ -19,4 +19,4 @@ namespace :tickets do
     puts "Max payment attempts: #{Ticket::MAX_PAYMENT_ATTEMPTS}"
     puts "Draft expiry time: #{Ticket::DRAFT_EXPIRY_TIME}"
   end
-end
+end