DOC: DatetimeIndex says that data is optional, but it is not

[Dr-Irv]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/dev/reference/api/pandas.DatetimeIndex.html

Documentation problem

Docs for DatetimeIndex say:

data: array-like (1-dimensional), optional
Optional datetime-like data to construct index with.

But data isn't optional:

pd.DatetimeIndex()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<omitted>\site-packages\pandas\core\indexes\datetimes.py", line 321, in __new__
    raise cls._scalar_data_error(data)
TypeError: DatetimeIndex(...) must be called with a collection of some kind, None was passed

Suggested fix for documentation

The word "optional" should be removed from that place in the documentation.

[nealxm]

take