[Bug]: Optimization log and optimal policy not in `--optimization-log-path` but in `--log-folder`

[turbotimon]

🐛 Bug

The help for --optimization-log-path claims: "Path to save the evaluation log and optimal policy for each hyperparameter tried during optimization. "

However, when i run optimization with --log-folder logs/ and --optimization-log-path optimization/, the log (csv) and optimal policy (pkl) gets saved to logs/:

logs/
  a2c/
    report_MountainCar-v0_1-trials-1-tpe-median_1713858676.csv 
    report_MountainCar-v0_1-trials-1-tpe-median_1713858676.pkl
optimization/
  trial_0/
    best_model.zip
    evaluations.npz

So either the documentation/help for these parameters needs to be changed or the code where to write the report

To Reproduce

python train.py --algo a2c --env MountainCar-v0 -optimize  --log-folder logs/ --optimization-log-path optimization/

Relevant log output / Error message

No response

System Info

• OS: Linux-6.1.84-x86_64-with-glibc2.38 # 1-NixOS SMP PREEMPT_DYNAMIC Wed Apr 3 13:19:55 UTC 2024
• Python: 3.10.13
• Stable-Baselines3: 2.3.0
• PyTorch: 2.2.2+cu121
• GPU Enabled: False
• Numpy: 1.26.4
• Cloudpickle: 3.0.0
• Gymnasium: 0.29.1

Checklist

• I have checked that there is no similar issue in the repo
• I have read the SB3 documentation
• I have read the RL Zoo documentation
• I have provided a minimal and working example to reproduce the bug
• I've used the markdown code blocks for both code and stack traces.

[turbotimon]

(@araffin just fyi: If you have decided what you prefer (changing the help/doc strings OR fix where it will be saved), I'm happy to do a merge request)