input: Write a function to generate a multiplication table for numbers in a given range defined by start and end parameters. The function should print the multiplication values for each pair of numbers within the range. If the start parameter is greater than or equal to the end parameter, the function should print "Invalid Range". If the range is valid, the function should print the multiplication table in a grid format.
  assert multiplication_table(5, 10)
  assert multiplication_table(10, 5) == "Invalid Range"
  assert multiplication_table(2, 2)
  assert multiplication_table(1, 4)
output: def multiplication_table(start, end):
      if start >= end:
          print("Invalid Range")
          return
      for i in range(start, end + 1):
          for j in range(start, end + 1):
              print(i * j, end="\t")
          print()