input: Write a python function to detect if a given string contains any of the specified keywords.
  assert keyword_detector("I love ice cream", ["chocolate", "vanilla"]) == False
  assert keyword_detector("I love vanilla ice cream", ["chocolate", "vanilla"]) == True
  assert keyword_detector("Chocolate is my favorite", ["chocolate", "vanilla"]) == True
  assert keyword_detector("I enjoy reading books", ["chocolate", "vanilla"]) == False
output: def keyword_detector(text, keywords):
      for keyword in keywords:
          if keyword in text:
              return True
      return False