Typo in target path specification for variables in `OscDatasetStacGenerator`

[anders0204]

deep-code/deep_code/utils/dataset_stac_generator.py

Line 408 in 624357a

target=f"../../varibales/{var}/catalog.json",

This typo will create invalid path links for Variables.

Should change varibales to variables 😄

[TejasMorbagal]

Thanks for the issue. Already addressed and will be solved in the next PR.