input: Write a python function to generate numbers by adding 5 to each number in the list.
  assert generate_numbers([1, 2, 3]) == [6, 7, 8]
  assert generate_numbers([10, 20, 30]) == [15, 25, 35]
  assert generate_numbers([0, -5, 5]) == [5, 0, 10]
output: def generate_numbers(numbers):
      return [x + 5 for x in numbers]