Fixes argument order for custom code evaluator

[LucasTrg]

Hey, I noticed arguments were fed out of order for custom code evaluators.
This is the template for the proposed custom evaluator

from typing import Dict

def evaluate(
    app_params: Dict[str, str],
    inputs: Dict[str, str],
    output: str,
    correct_answer: str
) -> float:
    # ...
    return 0.75  # Replace with your calculated score

But currently evaluators are invoked with result = environment["evaluate"](app_params, inputs, correct_answer, output)
To me the argument order in the template makes more sense, but it might not be backward compatible for people that worked around it by modifying the signature of the "evaluate" method.
Let me know which options sounds best to you and I can expand the PR in the desired direction :)

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[aybruhm]

You're right! Thanks for catching that, @LucasTrg!

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[mmabrouk]

@all-contributors please add @LucasTrg for code and bug fix

[allcontributors]

@mmabrouk

I've put up a pull request to add @LucasTrg! 🎉

[mmabrouk]

Thanks @LucasTrg !