input: Write a function to check if a keyword is in a list of lists and update its count or add it if not present.
  assert CheckKeywordInList([['apple', 2], ['banana', 3]], 'apple') == [['apple', 3], ['banana', 3]]
  assert CheckKeywordInList([['apple', 2], ['banana', 3]], 'orange') == [['apple', 2], ['banana', 3], ['orange', 1]]
  assert CheckKeywordInList([], 'apple') == [['apple', 1]]
output: def CheckKeywordInList(list_of_lists, keyword):
      for item in list_of_lists:
          if item[0] == keyword:
              item[1] += 1
              return list_of_lists
      list_of_lists.append([keyword, 1])
      return list_of_lists