Docstring examples in `from_key_val_list` show the pre-3.12 OrderedDict repr

src/requests/utils.py's from_key_val_list docstring shows:

>>> from_key_val_list([('key', 'val')])
OrderedDict([('key', 'val')])

Since Python 3.12, collections.OrderedDict.__repr__ uses the regular dict form (cpython gh-101446), so on any currently supported Python this actually prints:

OrderedDict({'key': 'val'})

Reproducer (Python 3.13.5, requests 2.34.2):

>>> from requests.utils import from_key_val_list
>>> from_key_val_list([('key', 'val')])
OrderedDict({'key': 'val'})
>>> from_key_val_list({'key': 'val'})
OrderedDict({'key': 'val'})

The ValueError example in the same docstring is still accurate. Both stale occurrences are on lines 351 and 357, and a grep of the rest of the package found no others.

I have a two-line fix ready on a fork and would be glad to open a pull request if that's welcome. (The compare page says PRs are limited to collaborators, hence this issue.)

Open src/requests/utils.py and inspect the from_key_val_list docstring around lines 351 and 357. Run the two examples shown in the issue to confirm the current OrderedDict representation, then update both stale occurrences so the documentation matches Python 3.12 and later.