cp: docs: cross-link Nemotron-CC recipe as a production NeMo Curator example (1767) into r1.2.0

[svcnvidia-nemo-ci]

beep boop [🤖]: Hi @arhamm1 👋,

we've cherry picked #1767 into  for you! 🚀

Please review and approve this cherry pick by your convenience!

[svcnvidia-nemo-ci]

/ok to test 7290531

[copy-pr-bot]

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[greptile-apps]

Greptile Summary

This is a documentation-only cherry-pick (from main #1767 into r1.2.0) that adds cross-links to the Nemotron-CC end-to-end curation recipe as a production NeMo Curator example. Internal relative links resolve correctly to the existing tutorials/synthetic/nemotron_cc/ directory.

Confidence Score: 5/5

Documentation-only change with valid internal links; safe to merge.

No code changes; only markdown documentation additions. Internal relative paths (tutorials/synthetic/nemotron_cc/) were verified to exist in the repository. No P0/P1 issues found.

No files require special attention.

Important Files Changed

Filename	Overview
README.md	Adds a "Real-World Recipe" prose block and a "Recipes" row to the resources table, cross-linking the Nemotron-CC external pipeline and the in-repo SDG tutorial.
tutorials/README.md	Adds a "Production Recipes" section with a table entry for Nemotron-CC, linking to the external GitHub recipe and the in-repo synthetic tutorial.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[README.md] -->|links to| B[External: Nemotron-CC GitHub Recipe]
    A -->|links to| C[tutorials/synthetic/nemotron_cc/]
    D[tutorials/README.md] -->|Production Recipes section| B
    D -->|links to| C
    B -->|reproduces| E[HuggingFace: nvidia/Nemotron-CC-v2]

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