nemotron-cc-code in super3 pretraining data recipe should be publicly available

[verdimrc]

The .json files https://github.com/NVIDIA-NeMo/Nemotron/blob/main/src/nemotron/recipes/super3/stage0_pretrain/config/data_prep/ still lists nemotron-cc-code under _missing_categories.

If nemotron-cc-code is the same as https://huggingface.co/datasets/nvidia/Nemotron-CC-Code-v1, should these .json files be fixed?

• data_blend_raw_ong_context.json
• data_blend_raw_phase1.json
• data_blend_raw_phase2.json