Fixes a TypeError in rosenbrock_ademamix.ipynb caused by a parameter name mismatch.

[rajasekharporeddy]

The function _body_fn expects the keyword argument solver, but was being called with solve. This PR renames the argument in the function call to solver to resolve the issue.

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_2781/1762145155.py in <cell line: 0>()
     20     opt_state = solver.init(params)
     21 
---> 22     _, all_params = jax.lax.scan(
     23         partial(_body_fn, solve=solver, b1=b1),
     24         (params, opt_state, 0),

    [... skipping hidden 9 frame]

/usr/local/lib/python3.12/dist-packages/jax/_src/linear_util.py in _get_result_paths_thunk(_fun, _store, *args, **kwargs)
    427 @transformation_with_aux2
    428 def _get_result_paths_thunk(_fun: Callable, _store: Store, *args, **kwargs):
--> 429   ans = _fun(*args, **kwargs)
    430   result_paths = tuple(f"result{_clean_keystr_arg_names(path)}" for path, _ in generate_key_paths(ans))
    431   if _store:

TypeError: _body_fn() got an unexpected keyword argument 'solve'

Failure repro: Colab gist

Fixed Notebook: Colab gist