random selection in multi-dataset

[rjkoch]

Gym-Trading-Env/src/gym_trading_env/environments.py

Line 385 in 1b5b466

dataset_path = self.dataset_pathes[random_int]

I think this should be
dataset_path = self.dataset_pathes[potential_dataset_pathes[random_int]]

the previous line
random_int = np.random.randint(potential_dataset_pathes.size)

is selecting a random integer within the domain of the length of the array. We need to reference that to pick the right entry of our potential_dataset_pathes

[rjkoch]

after implementing this and realizing another issue, I think it's better to do this:
random_int = potential_dataset_pathes[np.random.randint(potential_dataset_pathes.size)]