input: Write a function to generate a histogram from a list of numbers using matplotlib.
  assert generate_histogram([1, 2, 3, 4, 5, 5], 5) is None
  assert generate_histogram([10, 20, 20, 40, 50, 50, 50], 4) is None
  assert generate_histogram([1, 1, 1, 2, 2, 3], 3) is None
output: def generate_histogram(data, bins):
      import matplotlib.pyplot as plt
      
      plt.hist(data, bins=bins)
      plt.xlabel('Value')
      plt.ylabel('Frequency')
      plt.title('Histogram')
      plt.show()